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Agenda-Alex/wordpress/wp-includes/formatting.php

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<?php
/**
* Main WordPress Formatting API.
*
* Handles many functions for formatting output.
*
* @package WordPress
*/
/**
* Replaces common plain text characters with formatted entities.
*
* Returns given text with transformations of quotes into smart quotes, apostrophes,
* dashes, ellipses, the trademark symbol, and the multiplication symbol.
*
* As an example,
*
* 'cause today's effort makes it worth tomorrow's "holiday" ...
*
* Becomes:
*
* &#8217;cause today&#8217;s effort makes it worth tomorrow&#8217;s &#8220;holiday&#8221; &#8230;
*
* Code within certain HTML blocks are skipped.
*
* Do not use this function before the {@see 'init'} action hook; everything will break.
*
* @since 0.71
*
* @global array $wp_cockneyreplace Array of formatted entities for certain common phrases.
* @global array $shortcode_tags
*
* @param string $text The text to be formatted.
* @param bool $reset Set to true for unit testing. Translated patterns will reset.
* @return string The string replaced with HTML entities.
*/
function wptexturize( $text, $reset = false ) {
global $wp_cockneyreplace, $shortcode_tags;
static $static_characters = null,
$static_replacements = null,
$dynamic_characters = null,
$dynamic_replacements = null,
$default_no_texturize_tags = null,
$default_no_texturize_shortcodes = null,
$run_texturize = true,
$apos = null,
$prime = null,
$double_prime = null,
$opening_quote = null,
$closing_quote = null,
$opening_single_quote = null,
$closing_single_quote = null,
$open_q_flag = '<!--oq-->',
$open_sq_flag = '<!--osq-->',
$apos_flag = '<!--apos-->';
// If there's nothing to do, just stop.
if ( empty( $text ) || false === $run_texturize ) {
return $text;
}
// Set up static variables. Run once only.
if ( $reset || ! isset( $static_characters ) ) {
/**
* Filters whether to skip running wptexturize().
*
* Returning false from the filter will effectively short-circuit wptexturize()
* and return the original text passed to the function instead.
*
* The filter runs only once, the first time wptexturize() is called.
*
* @since 4.0.0
*
* @see wptexturize()
*
* @param bool $run_texturize Whether to short-circuit wptexturize().
*/
$run_texturize = apply_filters( 'run_wptexturize', $run_texturize );
if ( false === $run_texturize ) {
return $text;
}
/* translators: Opening curly double quote. */
$opening_quote = _x( '&#8220;', 'opening curly double quote' );
/* translators: Closing curly double quote. */
$closing_quote = _x( '&#8221;', 'closing curly double quote' );
/* translators: Apostrophe, for example in 'cause or can't. */
$apos = _x( '&#8217;', 'apostrophe' );
/* translators: Prime, for example in 9' (nine feet). */
$prime = _x( '&#8242;', 'prime' );
/* translators: Double prime, for example in 9" (nine inches). */
$double_prime = _x( '&#8243;', 'double prime' );
/* translators: Opening curly single quote. */
$opening_single_quote = _x( '&#8216;', 'opening curly single quote' );
/* translators: Closing curly single quote. */
$closing_single_quote = _x( '&#8217;', 'closing curly single quote' );
/* translators: En dash. */
$en_dash = _x( '&#8211;', 'en dash' );
/* translators: Em dash. */
$em_dash = _x( '&#8212;', 'em dash' );
$default_no_texturize_tags = array( 'pre', 'code', 'kbd', 'style', 'script', 'tt' );
$default_no_texturize_shortcodes = array( 'code' );
// If a plugin has provided an autocorrect array, use it.
if ( isset( $wp_cockneyreplace ) ) {
$cockney = array_keys( $wp_cockneyreplace );
$cockneyreplace = array_values( $wp_cockneyreplace );
} else {
/*
* translators: This is a comma-separated list of words that defy the syntax of quotations in normal use,
* for example... 'We do not have enough words yet'... is a typical quoted phrase. But when we write
* lines of code 'til we have enough of 'em, then we need to insert apostrophes instead of quotes.
*/
$cockney = explode(
',',
_x(
"'tain't,'twere,'twas,'tis,'twill,'til,'bout,'nuff,'round,'cause,'em",
'Comma-separated list of words to texturize in your language'
)
);
$cockneyreplace = explode(
',',
_x(
'&#8217;tain&#8217;t,&#8217;twere,&#8217;twas,&#8217;tis,&#8217;twill,&#8217;til,&#8217;bout,&#8217;nuff,&#8217;round,&#8217;cause,&#8217;em',
'Comma-separated list of replacement words in your language'
)
);
}
$static_characters = array_merge( array( '...', '``', '\'\'', ' (tm)' ), $cockney );
$static_replacements = array_merge( array( '&#8230;', $opening_quote, $closing_quote, ' &#8482;' ), $cockneyreplace );
/*
* Pattern-based replacements of characters.
* Sort the remaining patterns into several arrays for performance tuning.
*/
$dynamic_characters = array(
'apos' => array(),
'quote' => array(),
'dash' => array(),
);
$dynamic_replacements = array(
'apos' => array(),
'quote' => array(),
'dash' => array(),
);
$dynamic = array();
$spaces = wp_spaces_regexp();
// '99' and '99" are ambiguous among other patterns; assume it's an abbreviated year at the end of a quotation.
if ( "'" !== $apos || "'" !== $closing_single_quote ) {
$dynamic[ '/\'(\d\d)\'(?=\Z|[.,:;!?)}\-\]]|&gt;|' . $spaces . ')/' ] = $apos_flag . '$1' . $closing_single_quote;
}
if ( "'" !== $apos || '"' !== $closing_quote ) {
$dynamic[ '/\'(\d\d)"(?=\Z|[.,:;!?)}\-\]]|&gt;|' . $spaces . ')/' ] = $apos_flag . '$1' . $closing_quote;
}
// '99 '99s '99's (apostrophe) But never '9 or '99% or '999 or '99.0.
if ( "'" !== $apos ) {
$dynamic['/\'(?=\d\d(?:\Z|(?![%\d]|[.,]\d)))/'] = $apos_flag;
}
// Quoted numbers like '0.42'.
if ( "'" !== $opening_single_quote && "'" !== $closing_single_quote ) {
$dynamic[ '/(?<=\A|' . $spaces . ')\'(\d[.,\d]*)\'/' ] = $open_sq_flag . '$1' . $closing_single_quote;
}
// Single quote at start, or preceded by (, {, <, [, ", -, or spaces.
if ( "'" !== $opening_single_quote ) {
$dynamic[ '/(?<=\A|[([{"\-]|&lt;|' . $spaces . ')\'/' ] = $open_sq_flag;
}
// Apostrophe in a word. No spaces, double apostrophes, or other punctuation.
if ( "'" !== $apos ) {
$dynamic[ '/(?<!' . $spaces . ')\'(?!\Z|[.,:;!?"\'(){}[\]\-]|&[lg]t;|' . $spaces . ')/' ] = $apos_flag;
}
$dynamic_characters['apos'] = array_keys( $dynamic );
$dynamic_replacements['apos'] = array_values( $dynamic );
$dynamic = array();
// Quoted numbers like "42".
if ( '"' !== $opening_quote && '"' !== $closing_quote ) {
$dynamic[ '/(?<=\A|' . $spaces . ')"(\d[.,\d]*)"/' ] = $open_q_flag . '$1' . $closing_quote;
}
// Double quote at start, or preceded by (, {, <, [, -, or spaces, and not followed by spaces.
if ( '"' !== $opening_quote ) {
$dynamic[ '/(?<=\A|[([{\-]|&lt;|' . $spaces . ')"(?!' . $spaces . ')/' ] = $open_q_flag;
}
$dynamic_characters['quote'] = array_keys( $dynamic );
$dynamic_replacements['quote'] = array_values( $dynamic );
$dynamic = array();
// Dashes and spaces.
$dynamic['/---/'] = $em_dash;
$dynamic[ '/(?<=^|' . $spaces . ')--(?=$|' . $spaces . ')/' ] = $em_dash;
$dynamic['/(?<!xn)--/'] = $en_dash;
$dynamic[ '/(?<=^|' . $spaces . ')-(?=$|' . $spaces . ')/' ] = $en_dash;
$dynamic_characters['dash'] = array_keys( $dynamic );
$dynamic_replacements['dash'] = array_values( $dynamic );
}
// Must do this every time in case plugins use these filters in a context sensitive manner.
/**
* Filters the list of HTML elements not to texturize.
*
* @since 2.8.0
*
* @param string[] $default_no_texturize_tags An array of HTML element names.
*/
$no_texturize_tags = apply_filters( 'no_texturize_tags', $default_no_texturize_tags );
/**
* Filters the list of shortcodes not to texturize.
*
* @since 2.8.0
*
* @param string[] $default_no_texturize_shortcodes An array of shortcode names.
*/
$no_texturize_shortcodes = apply_filters( 'no_texturize_shortcodes', $default_no_texturize_shortcodes );
$no_texturize_tags_stack = array();
$no_texturize_shortcodes_stack = array();
// Look for shortcodes and HTML elements.
preg_match_all( '@\[/?([^<>&/\[\]\x00-\x20=]++)@', $text, $matches );
$tagnames = array_intersect( array_keys( $shortcode_tags ), $matches[1] );
$found_shortcodes = ! empty( $tagnames );
$shortcode_regex = $found_shortcodes ? _get_wptexturize_shortcode_regex( $tagnames ) : '';
$regex = _get_wptexturize_split_regex( $shortcode_regex );
$textarr = preg_split( $regex, $text, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY );
foreach ( $textarr as &$curl ) {
// Only call _wptexturize_pushpop_element if $curl is a delimiter.
$first = $curl[0];
if ( '<' === $first ) {
if ( str_starts_with( $curl, '<!--' ) ) {
// This is an HTML comment delimiter.
continue;
} else {
// This is an HTML element delimiter.
// Replace each & with &#038; unless it already looks like an entity.
$curl = preg_replace( '/&(?!#(?:\d+|x[a-f0-9]+);|[a-z1-4]{1,8};)/i', '&#038;', $curl );
_wptexturize_pushpop_element( $curl, $no_texturize_tags_stack, $no_texturize_tags );
}
} elseif ( '' === trim( $curl ) ) {
// This is a newline between delimiters. Performance improves when we check this.
continue;
} elseif ( '[' === $first && $found_shortcodes && 1 === preg_match( '/^' . $shortcode_regex . '$/', $curl ) ) {
// This is a shortcode delimiter.
if ( ! str_starts_with( $curl, '[[' ) && ! str_ends_with( $curl, ']]' ) ) {
// Looks like a normal shortcode.
_wptexturize_pushpop_element( $curl, $no_texturize_shortcodes_stack, $no_texturize_shortcodes );
} else {
// Looks like an escaped shortcode.
continue;
}
} elseif ( empty( $no_texturize_shortcodes_stack ) && empty( $no_texturize_tags_stack ) ) {
// This is neither a delimiter, nor is this content inside of no_texturize pairs. Do texturize.
$curl = str_replace( $static_characters, $static_replacements, $curl );
if ( str_contains( $curl, "'" ) ) {
$curl = preg_replace( $dynamic_characters['apos'], $dynamic_replacements['apos'], $curl );
$curl = wptexturize_primes( $curl, "'", $prime, $open_sq_flag, $closing_single_quote );
$curl = str_replace( $apos_flag, $apos, $curl );
$curl = str_replace( $open_sq_flag, $opening_single_quote, $curl );
}
if ( str_contains( $curl, '"' ) ) {
$curl = preg_replace( $dynamic_characters['quote'], $dynamic_replacements['quote'], $curl );
$curl = wptexturize_primes( $curl, '"', $double_prime, $open_q_flag, $closing_quote );
$curl = str_replace( $open_q_flag, $opening_quote, $curl );
}
if ( str_contains( $curl, '-' ) ) {
$curl = preg_replace( $dynamic_characters['dash'], $dynamic_replacements['dash'], $curl );
}
// 9x9 (times), but never 0x9999.
if ( 1 === preg_match( '/(?<=\d)x\d/', $curl ) ) {
// Searching for a digit is 10 times more expensive than for the x, so we avoid doing this one!
$curl = preg_replace( '/\b(\d(?(?<=0)[\d\.,]+|[\d\.,]*))x(\d[\d\.,]*)\b/', '$1&#215;$2', $curl );
}
// Replace each & with &#038; unless it already looks like an entity.
$curl = preg_replace( '/&(?!#(?:\d+|x[a-f0-9]+);|[a-z1-4]{1,8};)/i', '&#038;', $curl );
}
}
return implode( '', $textarr );
}
/**
* Implements a logic tree to determine whether or not "7'." represents seven feet,
* then converts the special char into either a prime char or a closing quote char.
*
* @since 4.3.0
*
* @param string $haystack The plain text to be searched.
* @param string $needle The character to search for such as ' or ".
* @param string $prime The prime char to use for replacement.
* @param string $open_quote The opening quote char. Opening quote replacement must be
* accomplished already.
* @param string $close_quote The closing quote char to use for replacement.
* @return string The $haystack value after primes and quotes replacements.
*/
function wptexturize_primes( $haystack, $needle, $prime, $open_quote, $close_quote ) {
$spaces = wp_spaces_regexp();
$flag = '<!--wp-prime-or-quote-->';
$quote_pattern = "/$needle(?=\\Z|[.,:;!?)}\\-\\]]|&gt;|" . $spaces . ')/';
$prime_pattern = "/(?<=\\d)$needle/";
$flag_after_digit = "/(?<=\\d)$flag/";
$flag_no_digit = "/(?<!\\d)$flag/";
$sentences = explode( $open_quote, $haystack );
foreach ( $sentences as $key => &$sentence ) {
if ( ! str_contains( $sentence, $needle ) ) {
continue;
} elseif ( 0 !== $key && 0 === substr_count( $sentence, $close_quote ) ) {
$sentence = preg_replace( $quote_pattern, $flag, $sentence, -1, $count );
if ( $count > 1 ) {
// This sentence appears to have multiple closing quotes. Attempt Vulcan logic.
$sentence = preg_replace( $flag_no_digit, $close_quote, $sentence, -1, $count2 );
if ( 0 === $count2 ) {
// Try looking for a quote followed by a period.
$count2 = substr_count( $sentence, "$flag." );
if ( $count2 > 0 ) {
// Assume the rightmost quote-period match is the end of quotation.
$pos = strrpos( $sentence, "$flag." );
} else {
/*
* When all else fails, make the rightmost candidate a closing quote.
* This is most likely to be problematic in the context of bug #18549.
*/
$pos = strrpos( $sentence, $flag );
}
$sentence = substr_replace( $sentence, $close_quote, $pos, strlen( $flag ) );
}
// Use conventional replacement on any remaining primes and quotes.
$sentence = preg_replace( $prime_pattern, $prime, $sentence );
$sentence = preg_replace( $flag_after_digit, $prime, $sentence );
$sentence = str_replace( $flag, $close_quote, $sentence );
} elseif ( 1 === $count ) {
// Found only one closing quote candidate, so give it priority over primes.
$sentence = str_replace( $flag, $close_quote, $sentence );
$sentence = preg_replace( $prime_pattern, $prime, $sentence );
} else {
// No closing quotes found. Just run primes pattern.
$sentence = preg_replace( $prime_pattern, $prime, $sentence );
}
} else {
$sentence = preg_replace( $prime_pattern, $prime, $sentence );
$sentence = preg_replace( $quote_pattern, $close_quote, $sentence );
}
if ( '"' === $needle && str_contains( $sentence, '"' ) ) {
$sentence = str_replace( '"', $close_quote, $sentence );
}
}
return implode( $open_quote, $sentences );
}
/**
* Searches for disabled element tags. Pushes element to stack on tag open
* and pops on tag close.
*
* Assumes first char of `$text` is tag opening and last char is tag closing.
* Assumes second char of `$text` is optionally `/` to indicate closing as in `</html>`.
*
* @since 2.9.0
* @access private
*
* @param string $text Text to check. Must be a tag like `<html>` or `[shortcode]`.
* @param string[] $stack Array of open tag elements.
* @param string[] $disabled_elements Array of tag names to match against. Spaces are not allowed in tag names.
*/
function _wptexturize_pushpop_element( $text, &$stack, $disabled_elements ) {
// Is it an opening tag or closing tag?
if ( isset( $text[1] ) && '/' !== $text[1] ) {
$opening_tag = true;
$name_offset = 1;
} elseif ( 0 === count( $stack ) ) {
// Stack is empty. Just stop.
return;
} else {
$opening_tag = false;
$name_offset = 2;
}
// Parse out the tag name.
$space = strpos( $text, ' ' );
if ( false === $space ) {
$space = -1;
} else {
$space -= $name_offset;
}
$tag = substr( $text, $name_offset, $space );
// Handle disabled tags.
if ( in_array( $tag, $disabled_elements, true ) ) {
if ( $opening_tag ) {
/*
* This disables texturize until we find a closing tag of our type
* (e.g. <pre>) even if there was invalid nesting before that.
*
* Example: in the case <pre>sadsadasd</code>"baba"</pre>
* "baba" won't be texturized.
*/
array_push( $stack, $tag );
} elseif ( end( $stack ) === $tag ) {
array_pop( $stack );
}
}
}
/**
* Replaces double line breaks with paragraph elements.
*
* A group of regex replaces used to identify text formatted with newlines and
* replace double line breaks with HTML paragraph tags. The remaining line breaks
* after conversion become `<br />` tags, unless `$br` is set to '0' or 'false'.
*
* @since 0.71
*
* @param string $text The text which has to be formatted.
* @param bool $br Optional. If set, this will convert all remaining line breaks
* after paragraphing. Line breaks within `<script>`, `<style>`,
* and `<svg>` tags are not affected. Default true.
* @return string Text which has been converted into correct paragraph tags.
*/
function wpautop( $text, $br = true ) {
$pre_tags = array();
if ( trim( $text ) === '' ) {
return '';
}
// Just to make things a little easier, pad the end.
$text = $text . "\n";
/*
* Pre tags shouldn't be touched by autop.
* Replace pre tags with placeholders and bring them back after autop.
*/
if ( str_contains( $text, '<pre' ) ) {
$text_parts = explode( '</pre>', $text );
$last_part = array_pop( $text_parts );
$text = '';
$i = 0;
foreach ( $text_parts as $text_part ) {
$start = strpos( $text_part, '<pre' );
// Malformed HTML?
if ( false === $start ) {
$text .= $text_part;
continue;
}
$name = "<pre wp-pre-tag-$i></pre>";
$pre_tags[ $name ] = substr( $text_part, $start ) . '</pre>';
$text .= substr( $text_part, 0, $start ) . $name;
++$i;
}
$text .= $last_part;
}
// Change multiple <br>'s into two line breaks, which will turn into paragraphs.
$text = preg_replace( '|<br\s*/?>\s*<br\s*/?>|', "\n\n", $text );
$allblocks = '(?:table|thead|tfoot|caption|col|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|form|map|area|blockquote|address|style|p|h[1-6]|hr|fieldset|legend|section|article|aside|hgroup|header|footer|nav|figure|figcaption|details|menu|summary)';
// Add a double line break above block-level opening tags.
$text = preg_replace( '!(<' . $allblocks . '[\s/>])!', "\n\n$1", $text );
// Add a double line break below block-level closing tags.
$text = preg_replace( '!(</' . $allblocks . '>)!', "$1\n\n", $text );
// Add a double line break after hr tags, which are self closing.
$text = preg_replace( '!(<hr\s*?/?>)!', "$1\n\n", $text );
// Standardize newline characters to "\n".
$text = str_replace( array( "\r\n", "\r" ), "\n", $text );
// Find newlines in all elements and add placeholders.
$text = wp_replace_in_html_tags( $text, array( "\n" => ' <!-- wpnl --> ' ) );
// Collapse line breaks before and after <option> elements so they don't get autop'd.
if ( str_contains( $text, '<option' ) ) {
$text = preg_replace( '|\s*<option|', '<option', $text );
$text = preg_replace( '|</option>\s*|', '</option>', $text );
}
/*
* Collapse line breaks inside <object> elements, before <param> and <embed> elements
* so they don't get autop'd.
*/
if ( str_contains( $text, '</object>' ) ) {
$text = preg_replace( '|(<object[^>]*>)\s*|', '$1', $text );
$text = preg_replace( '|\s*</object>|', '</object>', $text );
$text = preg_replace( '%\s*(</?(?:param|embed)[^>]*>)\s*%', '$1', $text );
}
/*
* Collapse line breaks inside <audio> and <video> elements,
* before and after <source> and <track> elements.
*/
if ( str_contains( $text, '<source' ) || str_contains( $text, '<track' ) ) {
$text = preg_replace( '%([<\[](?:audio|video)[^>\]]*[>\]])\s*%', '$1', $text );
$text = preg_replace( '%\s*([<\[]/(?:audio|video)[>\]])%', '$1', $text );
$text = preg_replace( '%\s*(<(?:source|track)[^>]*>)\s*%', '$1', $text );
}
// Collapse line breaks before and after <figcaption> elements.
if ( str_contains( $text, '<figcaption' ) ) {
$text = preg_replace( '|\s*(<figcaption[^>]*>)|', '$1', $text );
$text = preg_replace( '|</figcaption>\s*|', '</figcaption>', $text );
}
// Remove more than two contiguous line breaks.
$text = preg_replace( "/\n\n+/", "\n\n", $text );
// Split up the contents into an array of strings, separated by double line breaks.
$paragraphs = preg_split( '/\n\s*\n/', $text, -1, PREG_SPLIT_NO_EMPTY );
// Reset $text prior to rebuilding.
$text = '';
// Rebuild the content as a string, wrapping every bit with a <p>.
foreach ( $paragraphs as $paragraph ) {
$text .= '<p>' . trim( $paragraph, "\n" ) . "</p>\n";
}
// Under certain strange conditions it could create a P of entirely whitespace.
$text = preg_replace( '|<p>\s*</p>|', '', $text );
// Add a closing <p> inside <div>, <address>, or <form> tag if missing.
$text = preg_replace( '!<p>([^<]+)</(div|address|form)>!', '<p>$1</p></$2>', $text );
// If an opening or closing block element tag is wrapped in a <p>, unwrap it.
$text = preg_replace( '!<p>\s*(</?' . $allblocks . '[^>]*>)\s*</p>!', '$1', $text );
// In some cases <li> may get wrapped in <p>, fix them.
$text = preg_replace( '|<p>(<li.+?)</p>|', '$1', $text );
// If a <blockquote> is wrapped with a <p>, move it inside the <blockquote>.
$text = preg_replace( '|<p><blockquote([^>]*)>|i', '<blockquote$1><p>', $text );
$text = str_replace( '</blockquote></p>', '</p></blockquote>', $text );
// If an opening or closing block element tag is preceded by an opening <p> tag, remove it.
$text = preg_replace( '!<p>\s*(</?' . $allblocks . '[^>]*>)!', '$1', $text );
// If an opening or closing block element tag is followed by a closing <p> tag, remove it.
$text = preg_replace( '!(</?' . $allblocks . '[^>]*>)\s*</p>!', '$1', $text );
// Optionally insert line breaks.
if ( $br ) {
// Replace newlines that shouldn't be touched with a placeholder.
$text = preg_replace_callback( '/<(script|style|svg|math).*?<\/\\1>/s', '_autop_newline_preservation_helper', $text );
// Normalize <br>
$text = str_replace( array( '<br>', '<br/>' ), '<br />', $text );
// Replace any new line characters that aren't preceded by a <br /> with a <br />.
$text = preg_replace( '|(?<!<br />)\s*\n|', "<br />\n", $text );
// Replace newline placeholders with newlines.
$text = str_replace( '<WPPreserveNewline />', "\n", $text );
}
// If a <br /> tag is after an opening or closing block tag, remove it.
$text = preg_replace( '!(</?' . $allblocks . '[^>]*>)\s*<br />!', '$1', $text );
// If a <br /> tag is before a subset of opening or closing block tags, remove it.
$text = preg_replace( '!<br />(\s*</?(?:p|li|div|dl|dd|dt|th|pre|td|ul|ol)[^>]*>)!', '$1', $text );
$text = preg_replace( "|\n</p>$|", '</p>', $text );
// Replace placeholder <pre> tags with their original content.
if ( ! empty( $pre_tags ) ) {
$text = str_replace( array_keys( $pre_tags ), array_values( $pre_tags ), $text );
}
// Restore newlines in all elements.
if ( str_contains( $text, '<!-- wpnl -->' ) ) {
$text = str_replace( array( ' <!-- wpnl --> ', '<!-- wpnl -->' ), "\n", $text );
}
return $text;
}
/**
* Separates HTML elements and comments from the text.
*
* @since 4.2.4
*
* @param string $input The text which has to be formatted.
* @return string[] Array of the formatted text.
*/
function wp_html_split( $input ) {
return preg_split( get_html_split_regex(), $input, -1, PREG_SPLIT_DELIM_CAPTURE );
}
/**
* Retrieves the regular expression for an HTML element.
*
* @since 4.4.0
*
* @return string The regular expression
*/
function get_html_split_regex() {
static $regex;
if ( ! isset( $regex ) ) {
// phpcs:disable Squiz.Strings.ConcatenationSpacing.PaddingFound -- don't remove regex indentation
$comments =
'!' // Start of comment, after the <.
. '(?:' // Unroll the loop: Consume everything until --> is found.
. '-(?!->)' // Dash not followed by end of comment.
. '[^\-]*+' // Consume non-dashes.
. ')*+' // Loop possessively.
. '(?:-->)?'; // End of comment. If not found, match all input.
$cdata =
'!\[CDATA\[' // Start of comment, after the <.
. '[^\]]*+' // Consume non-].
. '(?:' // Unroll the loop: Consume everything until ]]> is found.
. '](?!]>)' // One ] not followed by end of comment.
. '[^\]]*+' // Consume non-].
. ')*+' // Loop possessively.
. '(?:]]>)?'; // End of comment. If not found, match all input.
$escaped =
'(?=' // Is the element escaped?
. '!--'
. '|'
. '!\[CDATA\['
. ')'
. '(?(?=!-)' // If yes, which type?
. $comments
. '|'
. $cdata
. ')';
$regex =
'/(' // Capture the entire match.
. '<' // Find start of element.
. '(?' // Conditional expression follows.
. $escaped // Find end of escaped element.
. '|' // ...else...
. '[^>]*>?' // Find end of normal element.
. ')'
. ')/';
// phpcs:enable
}
return $regex;
}
/**
* Retrieves the combined regular expression for HTML and shortcodes.
*
* @access private
* @ignore
* @internal This function will be removed in 4.5.0 per Shortcode API Roadmap.
* @since 4.4.0
*
* @param string $shortcode_regex Optional. The result from _get_wptexturize_shortcode_regex().
* @return string The regular expression
*/
function _get_wptexturize_split_regex( $shortcode_regex = '' ) {
static $html_regex;
if ( ! isset( $html_regex ) ) {
// phpcs:disable Squiz.Strings.ConcatenationSpacing.PaddingFound -- don't remove regex indentation
$comment_regex =
'!' // Start of comment, after the <.
. '(?:' // Unroll the loop: Consume everything until --> is found.
. '-(?!->)' // Dash not followed by end of comment.
. '[^\-]*+' // Consume non-dashes.
. ')*+' // Loop possessively.
. '(?:-->)?'; // End of comment. If not found, match all input.
$html_regex = // Needs replaced with wp_html_split() per Shortcode API Roadmap.
'<' // Find start of element.
. '(?(?=!--)' // Is this a comment?
. $comment_regex // Find end of comment.
. '|'
. '[^>]*>?' // Find end of element. If not found, match all input.
. ')';
// phpcs:enable
}
if ( empty( $shortcode_regex ) ) {
$regex = '/(' . $html_regex . ')/';
} else {
$regex = '/(' . $html_regex . '|' . $shortcode_regex . ')/';
}
return $regex;
}
/**
* Retrieves the regular expression for shortcodes.
*
* @access private
* @ignore
* @since 4.4.0
*
* @param string[] $tagnames Array of shortcodes to find.
* @return string The regular expression
*/
function _get_wptexturize_shortcode_regex( $tagnames ) {
$tagregexp = implode( '|', array_map( 'preg_quote', $tagnames ) );
$tagregexp = "(?:$tagregexp)(?=[\\s\\]\\/])"; // Excerpt of get_shortcode_regex().
// phpcs:disable Squiz.Strings.ConcatenationSpacing.PaddingFound -- don't remove regex indentation
$regex =
'\[' // Find start of shortcode.
. '[\/\[]?' // Shortcodes may begin with [/ or [[.
. $tagregexp // Only match registered shortcodes, because performance.
. '(?:'
. '[^\[\]<>]+' // Shortcodes do not contain other shortcodes. Quantifier critical.
. '|'
. '<[^\[\]>]*>' // HTML elements permitted. Prevents matching ] before >.
. ')*+' // Possessive critical.
. '\]' // Find end of shortcode.
. '\]?'; // Shortcodes may end with ]].
// phpcs:enable
return $regex;
}
/**
* Replaces characters or phrases within HTML elements only.
*
* @since 4.2.3
*
* @param string $haystack The text which has to be formatted.
* @param array $replace_pairs In the form array('from' => 'to', ...).
* @return string The formatted text.
*/
function wp_replace_in_html_tags( $haystack, $replace_pairs ) {
// Find all elements.
$textarr = wp_html_split( $haystack );
$changed = false;
// Optimize when searching for one item.
if ( 1 === count( $replace_pairs ) ) {
// Extract $needle and $replace.
foreach ( $replace_pairs as $needle => $replace ) {
}
// Loop through delimiters (elements) only.
for ( $i = 1, $c = count( $textarr ); $i < $c; $i += 2 ) {
if ( str_contains( $textarr[ $i ], $needle ) ) {
$textarr[ $i ] = str_replace( $needle, $replace, $textarr[ $i ] );
$changed = true;
}
}
} else {
// Extract all $needles.
$needles = array_keys( $replace_pairs );
// Loop through delimiters (elements) only.
for ( $i = 1, $c = count( $textarr ); $i < $c; $i += 2 ) {
foreach ( $needles as $needle ) {
if ( str_contains( $textarr[ $i ], $needle ) ) {
$textarr[ $i ] = strtr( $textarr[ $i ], $replace_pairs );
$changed = true;
// After one strtr() break out of the foreach loop and look at next element.
break;
}
}
}
}
if ( $changed ) {
$haystack = implode( $textarr );
}
return $haystack;
}
/**
* Newline preservation help function for wpautop().
*
* @since 3.1.0
* @access private
*
* @param array $matches preg_replace_callback matches array
* @return string
*/
function _autop_newline_preservation_helper( $matches ) {
return str_replace( "\n", '<WPPreserveNewline />', $matches[0] );
}
/**
* Don't auto-p wrap shortcodes that stand alone.
*
* Ensures that shortcodes are not wrapped in `<p>...</p>`.
*
* @since 2.9.0
*
* @global array $shortcode_tags
*
* @param string $text The content.
* @return string The filtered content.
*/
function shortcode_unautop( $text ) {
global $shortcode_tags;
if ( empty( $shortcode_tags ) || ! is_array( $shortcode_tags ) ) {
return $text;
}
$tagregexp = implode( '|', array_map( 'preg_quote', array_keys( $shortcode_tags ) ) );
$spaces = wp_spaces_regexp();
// phpcs:disable Squiz.Strings.ConcatenationSpacing.PaddingFound,Universal.WhiteSpace.PrecisionAlignment.Found -- don't remove regex indentation
$pattern =
'/'
. '<p>' // Opening paragraph.
. '(?:' . $spaces . ')*+' // Optional leading whitespace.
. '(' // 1: The shortcode.
. '\\[' // Opening bracket.
. "($tagregexp)" // 2: Shortcode name.
. '(?![\\w-])' // Not followed by word character or hyphen.
// Unroll the loop: Inside the opening shortcode tag.
. '[^\\]\\/]*' // Not a closing bracket or forward slash.
. '(?:'
. '\\/(?!\\])' // A forward slash not followed by a closing bracket.
. '[^\\]\\/]*' // Not a closing bracket or forward slash.
. ')*?'
. '(?:'
. '\\/\\]' // Self closing tag and closing bracket.
. '|'
. '\\]' // Closing bracket.
. '(?:' // Unroll the loop: Optionally, anything between the opening and closing shortcode tags.
. '[^\\[]*+' // Not an opening bracket.
. '(?:'
. '\\[(?!\\/\\2\\])' // An opening bracket not followed by the closing shortcode tag.
. '[^\\[]*+' // Not an opening bracket.
. ')*+'
. '\\[\\/\\2\\]' // Closing shortcode tag.
. ')?'
. ')'
. ')'
. '(?:' . $spaces . ')*+' // Optional trailing whitespace.
. '<\\/p>' // Closing paragraph.
. '/';
// phpcs:enable
return preg_replace( $pattern, '$1', $text );
}
/**
* Checks to see if a string is utf8 encoded.
*
* NOTE: This function checks for 5-Byte sequences, UTF8
* has Bytes Sequences with a maximum length of 4.
*
* @author bmorel at ssi dot fr (modified)
* @since 1.2.1
*
* @param string $str The string to be checked
* @return bool True if $str fits a UTF-8 model, false otherwise.
*/
function seems_utf8( $str ) {
mbstring_binary_safe_encoding();
$length = strlen( $str );
reset_mbstring_encoding();
for ( $i = 0; $i < $length; $i++ ) {
$c = ord( $str[ $i ] );
if ( $c < 0x80 ) {
$n = 0; // 0bbbbbbb
} elseif ( ( $c & 0xE0 ) === 0xC0 ) {
$n = 1; // 110bbbbb
} elseif ( ( $c & 0xF0 ) === 0xE0 ) {
$n = 2; // 1110bbbb
} elseif ( ( $c & 0xF8 ) === 0xF0 ) {
$n = 3; // 11110bbb
} elseif ( ( $c & 0xFC ) === 0xF8 ) {
$n = 4; // 111110bb
} elseif ( ( $c & 0xFE ) === 0xFC ) {
$n = 5; // 1111110b
} else {
return false; // Does not match any model.
}
for ( $j = 0; $j < $n; $j++ ) { // n bytes matching 10bbbbbb follow ?
if ( ( ++$i === $length ) || ( ( ord( $str[ $i ] ) & 0xC0 ) !== 0x80 ) ) {
return false;
}
}
}
return true;
}
/**
* Converts a number of special characters into their HTML entities.
*
* Specifically deals with: `&`, `<`, `>`, `"`, and `'`.
*
* `$quote_style` can be set to ENT_COMPAT to encode `"` to
* `&quot;`, or ENT_QUOTES to do both. Default is ENT_NOQUOTES where no quotes are encoded.
*
* @since 1.2.2
* @since 5.5.0 `$quote_style` also accepts `ENT_XML1`.
* @access private
*
* @param string $text The text which is to be encoded.
* @param int|string $quote_style Optional. Converts double quotes if set to ENT_COMPAT,
* both single and double if set to ENT_QUOTES or none if set to ENT_NOQUOTES.
* Converts single and double quotes, as well as converting HTML
* named entities (that are not also XML named entities) to their
* code points if set to ENT_XML1. Also compatible with old values;
* converting single quotes if set to 'single',
* double if set to 'double' or both if otherwise set.
* Default is ENT_NOQUOTES.
* @param false|string $charset Optional. The character encoding of the string. Default false.
* @param bool $double_encode Optional. Whether to encode existing HTML entities. Default false.
* @return string The encoded text with HTML entities.
*/
function _wp_specialchars( $text, $quote_style = ENT_NOQUOTES, $charset = false, $double_encode = false ) {
$text = (string) $text;
if ( 0 === strlen( $text ) ) {
return '';
}
// Don't bother if there are no specialchars - saves some processing.
if ( ! preg_match( '/[&<>"\']/', $text ) ) {
return $text;
}
// Account for the previous behavior of the function when the $quote_style is not an accepted value.
if ( empty( $quote_style ) ) {
$quote_style = ENT_NOQUOTES;
} elseif ( ENT_XML1 === $quote_style ) {
$quote_style = ENT_QUOTES | ENT_XML1;
} elseif ( ! in_array( $quote_style, array( ENT_NOQUOTES, ENT_COMPAT, ENT_QUOTES, 'single', 'double' ), true ) ) {
$quote_style = ENT_QUOTES;
}
// Store the site charset as a static to avoid multiple calls to wp_load_alloptions().
if ( ! $charset ) {
static $_charset = null;
if ( ! isset( $_charset ) ) {
$alloptions = wp_load_alloptions();
$_charset = isset( $alloptions['blog_charset'] ) ? $alloptions['blog_charset'] : '';
}
$charset = $_charset;
}
if ( in_array( $charset, array( 'utf8', 'utf-8', 'UTF8' ), true ) ) {
$charset = 'UTF-8';
}
$_quote_style = $quote_style;
if ( 'double' === $quote_style ) {
$quote_style = ENT_COMPAT;
$_quote_style = ENT_COMPAT;
} elseif ( 'single' === $quote_style ) {
$quote_style = ENT_NOQUOTES;
}
if ( ! $double_encode ) {
/*
* Guarantee every &entity; is valid, convert &garbage; into &amp;garbage;
* This is required for PHP < 5.4.0 because ENT_HTML401 flag is unavailable.
*/
$text = wp_kses_normalize_entities( $text, ( $quote_style & ENT_XML1 ) ? 'xml' : 'html' );
}
$text = htmlspecialchars( $text, $quote_style, $charset, $double_encode );
// Back-compat.
if ( 'single' === $_quote_style ) {
$text = str_replace( "'", '&#039;', $text );
}
return $text;
}
/**
* Converts a number of HTML entities into their special characters.
*
* Specifically deals with: `&`, `<`, `>`, `"`, and `'`.
*
* `$quote_style` can be set to ENT_COMPAT to decode `"` entities,
* or ENT_QUOTES to do both `"` and `'`. Default is ENT_NOQUOTES where no quotes are decoded.
*
* @since 2.8.0
*
* @param string $text The text which is to be decoded.
* @param string|int $quote_style Optional. Converts double quotes if set to ENT_COMPAT,
* both single and double if set to ENT_QUOTES or
* none if set to ENT_NOQUOTES.
* Also compatible with old _wp_specialchars() values;
* converting single quotes if set to 'single',
* double if set to 'double' or both if otherwise set.
* Default is ENT_NOQUOTES.
* @return string The decoded text without HTML entities.
*/
function wp_specialchars_decode( $text, $quote_style = ENT_NOQUOTES ) {
$text = (string) $text;
if ( 0 === strlen( $text ) ) {
return '';
}
// Don't bother if there are no entities - saves a lot of processing.
if ( ! str_contains( $text, '&' ) ) {
return $text;
}
// Match the previous behavior of _wp_specialchars() when the $quote_style is not an accepted value.
if ( empty( $quote_style ) ) {
$quote_style = ENT_NOQUOTES;
} elseif ( ! in_array( $quote_style, array( 0, 2, 3, 'single', 'double' ), true ) ) {
$quote_style = ENT_QUOTES;
}
// More complete than get_html_translation_table( HTML_SPECIALCHARS ).
$single = array(
'&#039;' => '\'',
'&#x27;' => '\'',
);
$single_preg = array(
'/&#0*39;/' => '&#039;',
'/&#x0*27;/i' => '&#x27;',
);
$double = array(
'&quot;' => '"',
'&#034;' => '"',
'&#x22;' => '"',
);
$double_preg = array(
'/&#0*34;/' => '&#034;',
'/&#x0*22;/i' => '&#x22;',
);
$others = array(
'&lt;' => '<',
'&#060;' => '<',
'&gt;' => '>',
'&#062;' => '>',
'&amp;' => '&',
'&#038;' => '&',
'&#x26;' => '&',
);
$others_preg = array(
'/&#0*60;/' => '&#060;',
'/&#0*62;/' => '&#062;',
'/&#0*38;/' => '&#038;',
'/&#x0*26;/i' => '&#x26;',
);
if ( ENT_QUOTES === $quote_style ) {
$translation = array_merge( $single, $double, $others );
$translation_preg = array_merge( $single_preg, $double_preg, $others_preg );
} elseif ( ENT_COMPAT === $quote_style || 'double' === $quote_style ) {
$translation = array_merge( $double, $others );
$translation_preg = array_merge( $double_preg, $others_preg );
} elseif ( 'single' === $quote_style ) {
$translation = array_merge( $single, $others );
$translation_preg = array_merge( $single_preg, $others_preg );
} elseif ( ENT_NOQUOTES === $quote_style ) {
$translation = $others;
$translation_preg = $others_preg;
}
// Remove zero padding on numeric entities.
$text = preg_replace( array_keys( $translation_preg ), array_values( $translation_preg ), $text );
// Replace characters according to translation table.
return strtr( $text, $translation );
}
/**
* Checks for invalid UTF8 in a string.
*
* @since 2.8.0
*
* @param string $text The text which is to be checked.
* @param bool $strip Optional. Whether to attempt to strip out invalid UTF8. Default false.
* @return string The checked text.
*/
function wp_check_invalid_utf8( $text, $strip = false ) {
$text = (string) $text;
if ( 0 === strlen( $text ) ) {
return '';
}
// Store the site charset as a static to avoid multiple calls to get_option().
static $is_utf8 = null;
if ( ! isset( $is_utf8 ) ) {
$is_utf8 = in_array( get_option( 'blog_charset' ), array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ), true );
}
if ( ! $is_utf8 ) {
return $text;
}
// Check for support for utf8 in the installed PCRE library once and store the result in a static.
static $utf8_pcre = null;
if ( ! isset( $utf8_pcre ) ) {
// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
$utf8_pcre = @preg_match( '/^./u', 'a' );
}
// We can't demand utf8 in the PCRE installation, so just return the string in those cases.
if ( ! $utf8_pcre ) {
return $text;
}
// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged -- preg_match fails when it encounters invalid UTF8 in $text.
if ( 1 === @preg_match( '/^./us', $text ) ) {
return $text;
}
// Attempt to strip the bad chars if requested (not recommended).
if ( $strip && function_exists( 'iconv' ) ) {
return iconv( 'utf-8', 'utf-8', $text );
}
return '';
}
/**
* Encodes the Unicode values to be used in the URI.
*
* @since 1.5.0
* @since 5.8.3 Added the `encode_ascii_characters` parameter.
*
* @param string $utf8_string String to encode.
* @param int $length Max length of the string
* @param bool $encode_ascii_characters Whether to encode ascii characters such as < " '
* @return string String with Unicode encoded for URI.
*/
function utf8_uri_encode( $utf8_string, $length = 0, $encode_ascii_characters = false ) {
$unicode = '';
$values = array();
$num_octets = 1;
$unicode_length = 0;
mbstring_binary_safe_encoding();
$string_length = strlen( $utf8_string );
reset_mbstring_encoding();
for ( $i = 0; $i < $string_length; $i++ ) {
$value = ord( $utf8_string[ $i ] );
if ( $value < 128 ) {
$char = chr( $value );
$encoded_char = $encode_ascii_characters ? rawurlencode( $char ) : $char;
$encoded_char_length = strlen( $encoded_char );
if ( $length && ( $unicode_length + $encoded_char_length ) > $length ) {
break;
}
$unicode .= $encoded_char;
$unicode_length += $encoded_char_length;
} else {
if ( count( $values ) === 0 ) {
if ( $value < 224 ) {
$num_octets = 2;
} elseif ( $value < 240 ) {
$num_octets = 3;
} else {
$num_octets = 4;
}
}
$values[] = $value;
if ( $length && ( $unicode_length + ( $num_octets * 3 ) ) > $length ) {
break;
}
if ( count( $values ) === $num_octets ) {
for ( $j = 0; $j < $num_octets; $j++ ) {
$unicode .= '%' . dechex( $values[ $j ] );
}
$unicode_length += $num_octets * 3;
$values = array();
$num_octets = 1;
}
}
}
return $unicode;
}
/**
* Converts all accent characters to ASCII characters.
*
* If there are no accent characters, then the string given is just returned.
*
* **Accent characters converted:**
*
* Currency signs:
*
* | Code | Glyph | Replacement | Description |
* | -------- | ----- | ----------- | ------------------- |
* | U+00A3 | £ | (empty) | British Pound sign |
* | U+20AC | € | E | Euro sign |
*
* Decompositions for Latin-1 Supplement:
*
* | Code | Glyph | Replacement | Description |
* | ------- | ----- | ----------- | -------------------------------------- |
* | U+00AA | ª | a | Feminine ordinal indicator |
* | U+00BA | º | o | Masculine ordinal indicator |
* | U+00C0 | À | A | Latin capital letter A with grave |
* | U+00C1 | Á | A | Latin capital letter A with acute |
* | U+00C2 | Â | A | Latin capital letter A with circumflex |
* | U+00C3 | Ã | A | Latin capital letter A with tilde |
* | U+00C4 | Ä | A | Latin capital letter A with diaeresis |
* | U+00C5 | Å | A | Latin capital letter A with ring above |
* | U+00C6 | Æ | AE | Latin capital letter AE |
* | U+00C7 | Ç | C | Latin capital letter C with cedilla |
* | U+00C8 | È | E | Latin capital letter E with grave |
* | U+00C9 | É | E | Latin capital letter E with acute |
* | U+00CA | Ê | E | Latin capital letter E with circumflex |
* | U+00CB | Ë | E | Latin capital letter E with diaeresis |
* | U+00CC | Ì | I | Latin capital letter I with grave |
* | U+00CD | Í | I | Latin capital letter I with acute |
* | U+00CE | Î | I | Latin capital letter I with circumflex |
* | U+00CF | Ï | I | Latin capital letter I with diaeresis |
* | U+00D0 | Ð | D | Latin capital letter Eth |
* | U+00D1 | Ñ | N | Latin capital letter N with tilde |
* | U+00D2 | Ò | O | Latin capital letter O with grave |
* | U+00D3 | Ó | O | Latin capital letter O with acute |
* | U+00D4 | Ô | O | Latin capital letter O with circumflex |
* | U+00D5 | Õ | O | Latin capital letter O with tilde |
* | U+00D6 | Ö | O | Latin capital letter O with diaeresis |
* | U+00D8 | Ø | O | Latin capital letter O with stroke |
* | U+00D9 | Ù | U | Latin capital letter U with grave |
* | U+00DA | Ú | U | Latin capital letter U with acute |
* | U+00DB | Û | U | Latin capital letter U with circumflex |
* | U+00DC | Ü | U | Latin capital letter U with diaeresis |
* | U+00DD | Ý | Y | Latin capital letter Y with acute |
* | U+00DE | Þ | TH | Latin capital letter Thorn |
* | U+00DF | ß | s | Latin small letter sharp s |
* | U+00E0 | à | a | Latin small letter a with grave |
* | U+00E1 | á | a | Latin small letter a with acute |
* | U+00E2 | â | a | Latin small letter a with circumflex |
* | U+00E3 | ã | a | Latin small letter a with tilde |
* | U+00E4 | ä | a | Latin small letter a with diaeresis |
* | U+00E5 | å | a | Latin small letter a with ring above |
* | U+00E6 | æ | ae | Latin small letter ae |
* | U+00E7 | ç | c | Latin small letter c with cedilla |
* | U+00E8 | è | e | Latin small letter e with grave |
* | U+00E9 | é | e | Latin small letter e with acute |
* | U+00EA | ê | e | Latin small letter e with circumflex |
* | U+00EB | ë | e | Latin small letter e with diaeresis |
* | U+00EC | ì | i | Latin small letter i with grave |
* | U+00ED | í | i | Latin small letter i with acute |
* | U+00EE | î | i | Latin small letter i with circumflex |
* | U+00EF | ï | i | Latin small letter i with diaeresis |
* | U+00F0 | ð | d | Latin small letter Eth |
* | U+00F1 | ñ | n | Latin small letter n with tilde |
* | U+00F2 | ò | o | Latin small letter o with grave |
* | U+00F3 | ó | o | Latin small letter o with acute |
* | U+00F4 | ô | o | Latin small letter o with circumflex |
* | U+00F5 | õ | o | Latin small letter o with tilde |
* | U+00F6 | ö | o | Latin small letter o with diaeresis |
* | U+00F8 | ø | o | Latin small letter o with stroke |
* | U+00F9 | ù | u | Latin small letter u with grave |
* | U+00FA | ú | u | Latin small letter u with acute |
* | U+00FB | û | u | Latin small letter u with circumflex |
* | U+00FC | ü | u | Latin small letter u with diaeresis |
* | U+00FD | ý | y | Latin small letter y with acute |
* | U+00FE | þ | th | Latin small letter Thorn |
* | U+00FF | ÿ | y | Latin small letter y with diaeresis |
*
* Decompositions for Latin Extended-A:
*
* | Code | Glyph | Replacement | Description |
* | ------- | ----- | ----------- | ------------------------------------------------- |
* | U+0100 | Ā | A | Latin capital letter A with macron |
* | U+0101 | ā | a | Latin small letter a with macron |
* | U+0102 | Ă | A | Latin capital letter A with breve |
* | U+0103 | ă | a | Latin small letter a with breve |
* | U+0104 | Ą | A | Latin capital letter A with ogonek |
* | U+0105 | ą | a | Latin small letter a with ogonek |
* | U+01006 | Ć | C | Latin capital letter C with acute |
* | U+0107 | ć | c | Latin small letter c with acute |
* | U+0108 | Ĉ | C | Latin capital letter C with circumflex |
* | U+0109 | ĉ | c | Latin small letter c with circumflex |
* | U+010A | Ċ | C | Latin capital letter C with dot above |
* | U+010B | ċ | c | Latin small letter c with dot above |
* | U+010C | Č | C | Latin capital letter C with caron |
* | U+010D | č | c | Latin small letter c with caron |
* | U+010E | Ď | D | Latin capital letter D with caron |
* | U+010F | ď | d | Latin small letter d with caron |
* | U+0110 | Đ | D | Latin capital letter D with stroke |
* | U+0111 | đ | d | Latin small letter d with stroke |
* | U+0112 | Ē | E | Latin capital letter E with macron |
* | U+0113 | ē | e | Latin small letter e with macron |
* | U+0114 | Ĕ | E | Latin capital letter E with breve |
* | U+0115 | ĕ | e | Latin small letter e with breve |
* | U+0116 | Ė | E | Latin capital letter E with dot above |
* | U+0117 | ė | e | Latin small letter e with dot above |
* | U+0118 | Ę | E | Latin capital letter E with ogonek |
* | U+0119 | ę | e | Latin small letter e with ogonek |
* | U+011A | Ě | E | Latin capital letter E with caron |
* | U+011B | ě | e | Latin small letter e with caron |
* | U+011C | Ĝ | G | Latin capital letter G with circumflex |
* | U+011D | ĝ | g | Latin small letter g with circumflex |
* | U+011E | Ğ | G | Latin capital letter G with breve |
* | U+011F | ğ | g | Latin small letter g with breve |
* | U+0120 | Ġ | G | Latin capital letter G with dot above |
* | U+0121 | ġ | g | Latin small letter g with dot above |
* | U+0122 | Ģ | G | Latin capital letter G with cedilla |
* | U+0123 | ģ | g | Latin small letter g with cedilla |
* | U+0124 | Ĥ | H | Latin capital letter H with circumflex |
* | U+0125 | ĥ | h | Latin small letter h with circumflex |
* | U+0126 | Ħ | H | Latin capital letter H with stroke |
* | U+0127 | ħ | h | Latin small letter h with stroke |
* | U+0128 | Ĩ | I | Latin capital letter I with tilde |
* | U+0129 | ĩ | i | Latin small letter i with tilde |
* | U+012A | Ī | I | Latin capital letter I with macron |
* | U+012B | ī | i | Latin small letter i with macron |
* | U+012C | Ĭ | I | Latin capital letter I with breve |
* | U+012D | ĭ | i | Latin small letter i with breve |
* | U+012E | Į | I | Latin capital letter I with ogonek |
* | U+012F | į | i | Latin small letter i with ogonek |
* | U+0130 | İ | I | Latin capital letter I with dot above |
* | U+0131 | ı | i | Latin small letter dotless i |
* | U+0132 | IJ | IJ | Latin capital ligature IJ |
* | U+0133 | ij | ij | Latin small ligature ij |
* | U+0134 | Ĵ | J | Latin capital letter J with circumflex |
* | U+0135 | ĵ | j | Latin small letter j with circumflex |
* | U+0136 | Ķ | K | Latin capital letter K with cedilla |
* | U+0137 | ķ | k | Latin small letter k with cedilla |
* | U+0138 | ĸ | k | Latin small letter Kra |
* | U+0139 | Ĺ | L | Latin capital letter L with acute |
* | U+013A | ĺ | l | Latin small letter l with acute |
* | U+013B | Ļ | L | Latin capital letter L with cedilla |
* | U+013C | ļ | l | Latin small letter l with cedilla |
* | U+013D | Ľ | L | Latin capital letter L with caron |
* | U+013E | ľ | l | Latin small letter l with caron |
* | U+013F | Ŀ | L | Latin capital letter L with middle dot |
* | U+0140 | ŀ | l | Latin small letter l with middle dot |
* | U+0141 | Ł | L | Latin capital letter L with stroke |
* | U+0142 | ł | l | Latin small letter l with stroke |
* | U+0143 | Ń | N | Latin capital letter N with acute |
* | U+0144 | ń | n | Latin small letter N with acute |
* | U+0145 | Ņ | N | Latin capital letter N with cedilla |
* | U+0146 | ņ | n | Latin small letter n with cedilla |
* | U+0147 | Ň | N | Latin capital letter N with caron |
* | U+0148 | ň | n | Latin small letter n with caron |
* | U+0149 | ʼn | n | Latin small letter n preceded by apostrophe |
* | U+014A | Ŋ | N | Latin capital letter Eng |
* | U+014B | ŋ | n | Latin small letter Eng |
* | U+014C | Ō | O | Latin capital letter O with macron |
* | U+014D | ō | o | Latin small letter o with macron |
* | U+014E | Ŏ | O | Latin capital letter O with breve |
* | U+014F | ŏ | o | Latin small letter o with breve |
* | U+0150 | Ő | O | Latin capital letter O with double acute |
* | U+0151 | ő | o | Latin small letter o with double acute |
* | U+0152 | Π| OE | Latin capital ligature OE |
* | U+0153 | œ | oe | Latin small ligature oe |
* | U+0154 | Ŕ | R | Latin capital letter R with acute |
* | U+0155 | ŕ | r | Latin small letter r with acute |
* | U+0156 | Ŗ | R | Latin capital letter R with cedilla |
* | U+0157 | ŗ | r | Latin small letter r with cedilla |
* | U+0158 | Ř | R | Latin capital letter R with caron |
* | U+0159 | ř | r | Latin small letter r with caron |
* | U+015A | Ś | S | Latin capital letter S with acute |
* | U+015B | ś | s | Latin small letter s with acute |
* | U+015C | Ŝ | S | Latin capital letter S with circumflex |
* | U+015D | ŝ | s | Latin small letter s with circumflex |
* | U+015E | Ş | S | Latin capital letter S with cedilla |
* | U+015F | ş | s | Latin small letter s with cedilla |
* | U+0160 | Š | S | Latin capital letter S with caron |
* | U+0161 | š | s | Latin small letter s with caron |
* | U+0162 | Ţ | T | Latin capital letter T with cedilla |
* | U+0163 | ţ | t | Latin small letter t with cedilla |
* | U+0164 | Ť | T | Latin capital letter T with caron |
* | U+0165 | ť | t | Latin small letter t with caron |
* | U+0166 | Ŧ | T | Latin capital letter T with stroke |
* | U+0167 | ŧ | t | Latin small letter t with stroke |
* | U+0168 | Ũ | U | Latin capital letter U with tilde |
* | U+0169 | ũ | u | Latin small letter u with tilde |
* | U+016A | Ū | U | Latin capital letter U with macron |
* | U+016B | ū | u | Latin small letter u with macron |
* | U+016C | Ŭ | U | Latin capital letter U with breve |
* | U+016D | ŭ | u | Latin small letter u with breve |
* | U+016E | Ů | U | Latin capital letter U with ring above |
* | U+016F | ů | u | Latin small letter u with ring above |
* | U+0170 | Ű | U | Latin capital letter U with double acute |
* | U+0171 | ű | u | Latin small letter u with double acute |
* | U+0172 | Ų | U | Latin capital letter U with ogonek |
* | U+0173 | ų | u | Latin small letter u with ogonek |
* | U+0174 | Ŵ | W | Latin capital letter W with circumflex |
* | U+0175 | ŵ | w | Latin small letter w with circumflex |
* | U+0176 | Ŷ | Y | Latin capital letter Y with circumflex |
* | U+0177 | ŷ | y | Latin small letter y with circumflex |
* | U+0178 | Ÿ | Y | Latin capital letter Y with diaeresis |
* | U+0179 | Ź | Z | Latin capital letter Z with acute |
* | U+017A | ź | z | Latin small letter z with acute |
* | U+017B | Ż | Z | Latin capital letter Z with dot above |
* | U+017C | ż | z | Latin small letter z with dot above |
* | U+017D | Ž | Z | Latin capital letter Z with caron |
* | U+017E | ž | z | Latin small letter z with caron |
* | U+017F | ſ | s | Latin small letter long s |
* | U+01A0 | Ơ | O | Latin capital letter O with horn |
* | U+01A1 | ơ | o | Latin small letter o with horn |
* | U+01AF | Ư | U | Latin capital letter U with horn |
* | U+01B0 | ư | u | Latin small letter u with horn |
* | U+01CD | Ǎ | A | Latin capital letter A with caron |
* | U+01CE | ǎ | a | Latin small letter a with caron |
* | U+01CF | Ǐ | I | Latin capital letter I with caron |
* | U+01D0 | ǐ | i | Latin small letter i with caron |
* | U+01D1 | Ǒ | O | Latin capital letter O with caron |
* | U+01D2 | ǒ | o | Latin small letter o with caron |
* | U+01D3 | Ǔ | U | Latin capital letter U with caron |
* | U+01D4 | ǔ | u | Latin small letter u with caron |
* | U+01D5 | Ǖ | U | Latin capital letter U with diaeresis and macron |
* | U+01D6 | ǖ | u | Latin small letter u with diaeresis and macron |
* | U+01D7 | Ǘ | U | Latin capital letter U with diaeresis and acute |
* | U+01D8 | ǘ | u | Latin small letter u with diaeresis and acute |
* | U+01D9 | Ǚ | U | Latin capital letter U with diaeresis and caron |
* | U+01DA | ǚ | u | Latin small letter u with diaeresis and caron |
* | U+01DB | Ǜ | U | Latin capital letter U with diaeresis and grave |
* | U+01DC | ǜ | u | Latin small letter u with diaeresis and grave |
*
* Decompositions for Latin Extended-B:
*
* | Code | Glyph | Replacement | Description |
* | -------- | ----- | ----------- | ----------------------------------------- |
* | U+018F | Ə | E | Latin capital letter Ə |
* | U+0259 | ǝ | e | Latin small letter ǝ |
* | U+0218 | Ș | S | Latin capital letter S with comma below |
* | U+0219 | ș | s | Latin small letter s with comma below |
* | U+021A | Ț | T | Latin capital letter T with comma below |
* | U+021B | ț | t | Latin small letter t with comma below |
*
* Vowels with diacritic (Chinese, Hanyu Pinyin):
*
* | Code | Glyph | Replacement | Description |
* | -------- | ----- | ----------- | ----------------------------------------------------- |
* | U+0251 | ɑ | a | Latin small letter alpha |
* | U+1EA0 | Ạ | A | Latin capital letter A with dot below |
* | U+1EA1 | ạ | a | Latin small letter a with dot below |
* | U+1EA2 | Ả | A | Latin capital letter A with hook above |
* | U+1EA3 | ả | a | Latin small letter a with hook above |
* | U+1EA4 | Ấ | A | Latin capital letter A with circumflex and acute |
* | U+1EA5 | ấ | a | Latin small letter a with circumflex and acute |
* | U+1EA6 | Ầ | A | Latin capital letter A with circumflex and grave |
* | U+1EA7 | ầ | a | Latin small letter a with circumflex and grave |
* | U+1EA8 | Ẩ | A | Latin capital letter A with circumflex and hook above |
* | U+1EA9 | ẩ | a | Latin small letter a with circumflex and hook above |
* | U+1EAA | Ẫ | A | Latin capital letter A with circumflex and tilde |
* | U+1EAB | ẫ | a | Latin small letter a with circumflex and tilde |
* | U+1EA6 | Ậ | A | Latin capital letter A with circumflex and dot below |
* | U+1EAD | ậ | a | Latin small letter a with circumflex and dot below |
* | U+1EAE | Ắ | A | Latin capital letter A with breve and acute |
* | U+1EAF | ắ | a | Latin small letter a with breve and acute |
* | U+1EB0 | Ằ | A | Latin capital letter A with breve and grave |
* | U+1EB1 | ằ | a | Latin small letter a with breve and grave |
* | U+1EB2 | Ẳ | A | Latin capital letter A with breve and hook above |
* | U+1EB3 | ẳ | a | Latin small letter a with breve and hook above |
* | U+1EB4 | Ẵ | A | Latin capital letter A with breve and tilde |
* | U+1EB5 | ẵ | a | Latin small letter a with breve and tilde |
* | U+1EB6 | Ặ | A | Latin capital letter A with breve and dot below |
* | U+1EB7 | ặ | a | Latin small letter a with breve and dot below |
* | U+1EB8 | Ẹ | E | Latin capital letter E with dot below |
* | U+1EB9 | ẹ | e | Latin small letter e with dot below |
* | U+1EBA | Ẻ | E | Latin capital letter E with hook above |
* | U+1EBB | ẻ | e | Latin small letter e with hook above |
* | U+1EBC | Ẽ | E | Latin capital letter E with tilde |
* | U+1EBD | ẽ | e | Latin small letter e with tilde |
* | U+1EBE | Ế | E | Latin capital letter E with circumflex and acute |
* | U+1EBF | ế | e | Latin small letter e with circumflex and acute |
* | U+1EC0 | Ề | E | Latin capital letter E with circumflex and grave |
* | U+1EC1 | ề | e | Latin small letter e with circumflex and grave |
* | U+1EC2 | Ể | E | Latin capital letter E with circumflex and hook above |
* | U+1EC3 | ể | e | Latin small letter e with circumflex and hook above |
* | U+1EC4 | Ễ | E | Latin capital letter E with circumflex and tilde |
* | U+1EC5 | ễ | e | Latin small letter e with circumflex and tilde |
* | U+1EC6 | Ệ | E | Latin capital letter E with circumflex and dot below |
* | U+1EC7 | ệ | e | Latin small letter e with circumflex and dot below |
* | U+1EC8 | Ỉ | I | Latin capital letter I with hook above |
* | U+1EC9 | ỉ | i | Latin small letter i with hook above |
* | U+1ECA | Ị | I | Latin capital letter I with dot below |
* | U+1ECB | ị | i | Latin small letter i with dot below |
* | U+1ECC | Ọ | O | Latin capital letter O with dot below |
* | U+1ECD | ọ | o | Latin small letter o with dot below |
* | U+1ECE | Ỏ | O | Latin capital letter O with hook above |
* | U+1ECF | ỏ | o | Latin small letter o with hook above |
* | U+1ED0 | Ố | O | Latin capital letter O with circumflex and acute |
* | U+1ED1 | ố | o | Latin small letter o with circumflex and acute |
* | U+1ED2 | Ồ | O | Latin capital letter O with circumflex and grave |
* | U+1ED3 | ồ | o | Latin small letter o with circumflex and grave |
* | U+1ED4 | Ổ | O | Latin capital letter O with circumflex and hook above |
* | U+1ED5 | ổ | o | Latin small letter o with circumflex and hook above |
* | U+1ED6 | Ỗ | O | Latin capital letter O with circumflex and tilde |
* | U+1ED7 | ỗ | o | Latin small letter o with circumflex and tilde |
* | U+1ED8 | Ộ | O | Latin capital letter O with circumflex and dot below |
* | U+1ED9 | ộ | o | Latin small letter o with circumflex and dot below |
* | U+1EDA | Ớ | O | Latin capital letter O with horn and acute |
* | U+1EDB | ớ | o | Latin small letter o with horn and acute |
* | U+1EDC | Ờ | O | Latin capital letter O with horn and grave |
* | U+1EDD | ờ | o | Latin small letter o with horn and grave |
* | U+1EDE | Ở | O | Latin capital letter O with horn and hook above |
* | U+1EDF | ở | o | Latin small letter o with horn and hook above |
* | U+1EE0 | Ỡ | O | Latin capital letter O with horn and tilde |
* | U+1EE1 | ỡ | o | Latin small letter o with horn and tilde |
* | U+1EE2 | Ợ | O | Latin capital letter O with horn and dot below |
* | U+1EE3 | ợ | o | Latin small letter o with horn and dot below |
* | U+1EE4 | Ụ | U | Latin capital letter U with dot below |
* | U+1EE5 | ụ | u | Latin small letter u with dot below |
* | U+1EE6 | Ủ | U | Latin capital letter U with hook above |
* | U+1EE7 | ủ | u | Latin small letter u with hook above |
* | U+1EE8 | Ứ | U | Latin capital letter U with horn and acute |
* | U+1EE9 | ứ | u | Latin small letter u with horn and acute |
* | U+1EEA | Ừ | U | Latin capital letter U with horn and grave |
* | U+1EEB | ừ | u | Latin small letter u with horn and grave |
* | U+1EEC | Ử | U | Latin capital letter U with horn and hook above |
* | U+1EED | ử | u | Latin small letter u with horn and hook above |
* | U+1EEE | Ữ | U | Latin capital letter U with horn and tilde |
* | U+1EEF | ữ | u | Latin small letter u with horn and tilde |
* | U+1EF0 | Ự | U | Latin capital letter U with horn and dot below |
* | U+1EF1 | ự | u | Latin small letter u with horn and dot below |
* | U+1EF2 | Ỳ | Y | Latin capital letter Y with grave |
* | U+1EF3 | ỳ | y | Latin small letter y with grave |
* | U+1EF4 | Ỵ | Y | Latin capital letter Y with dot below |
* | U+1EF5 | ỵ | y | Latin small letter y with dot below |
* | U+1EF6 | Ỷ | Y | Latin capital letter Y with hook above |
* | U+1EF7 | ỷ | y | Latin small letter y with hook above |
* | U+1EF8 | Ỹ | Y | Latin capital letter Y with tilde |
* | U+1EF9 | ỹ | y | Latin small letter y with tilde |
*
* German (`de_DE`), German formal (`de_DE_formal`), German (Switzerland) formal (`de_CH`),
* German (Switzerland) informal (`de_CH_informal`), and German (Austria) (`de_AT`) locales:
*
* | Code | Glyph | Replacement | Description |
* | -------- | ----- | ----------- | --------------------------------------- |
* | U+00C4 | Ä | Ae | Latin capital letter A with diaeresis |
* | U+00E4 | ä | ae | Latin small letter a with diaeresis |
* | U+00D6 | Ö | Oe | Latin capital letter O with diaeresis |
* | U+00F6 | ö | oe | Latin small letter o with diaeresis |
* | U+00DC | Ü | Ue | Latin capital letter U with diaeresis |
* | U+00FC | ü | ue | Latin small letter u with diaeresis |
* | U+00DF | ß | ss | Latin small letter sharp s |
*
* Danish (`da_DK`) locale:
*
* | Code | Glyph | Replacement | Description |
* | -------- | ----- | ----------- | --------------------------------------- |
* | U+00C6 | Æ | Ae | Latin capital letter AE |
* | U+00E6 | æ | ae | Latin small letter ae |
* | U+00D8 | Ø | Oe | Latin capital letter O with stroke |
* | U+00F8 | ø | oe | Latin small letter o with stroke |
* | U+00C5 | Å | Aa | Latin capital letter A with ring above |
* | U+00E5 | å | aa | Latin small letter a with ring above |
*
* Catalan (`ca`) locale:
*
* | Code | Glyph | Replacement | Description |
* | -------- | ----- | ----------- | --------------------------------------- |
* | U+00B7 | l·l | ll | Flown dot (between two Ls) |
*
* Serbian (`sr_RS`) and Bosnian (`bs_BA`) locales:
*
* | Code | Glyph | Replacement | Description |
* | -------- | ----- | ----------- | --------------------------------------- |
* | U+0110 | Đ | DJ | Latin capital letter D with stroke |
* | U+0111 | đ | dj | Latin small letter d with stroke |
*
* @since 1.2.1
* @since 4.6.0 Added locale support for `de_CH`, `de_CH_informal`, and `ca`.
* @since 4.7.0 Added locale support for `sr_RS`.
* @since 4.8.0 Added locale support for `bs_BA`.
* @since 5.7.0 Added locale support for `de_AT`.
* @since 6.0.0 Added the `$locale` parameter.
* @since 6.1.0 Added Unicode NFC encoding normalization support.
*
* @param string $text Text that might have accent characters.
* @param string $locale Optional. The locale to use for accent removal. Some character
* replacements depend on the locale being used (e.g. 'de_DE').
* Defaults to the current locale.
* @return string Filtered string with replaced "nice" characters.
*/
function remove_accents( $text, $locale = '' ) {
if ( ! preg_match( '/[\x80-\xff]/', $text ) ) {
return $text;
}
if ( seems_utf8( $text ) ) {
/*
* Unicode sequence normalization from NFD (Normalization Form Decomposed)
* to NFC (Normalization Form [Pre]Composed), the encoding used in this function.
*/
if ( function_exists( 'normalizer_is_normalized' )
&& function_exists( 'normalizer_normalize' )
) {
if ( ! normalizer_is_normalized( $text ) ) {
$text = normalizer_normalize( $text );
}
}
$chars = array(
// Decompositions for Latin-1 Supplement.
'ª' => 'a',
'º' => 'o',
'À' => 'A',
'Á' => 'A',
'Â' => 'A',
'Ã' => 'A',
'Ä' => 'A',
'Å' => 'A',
'Æ' => 'AE',
'Ç' => 'C',
'È' => 'E',
'É' => 'E',
'Ê' => 'E',
'Ë' => 'E',
'Ì' => 'I',
'Í' => 'I',
'Î' => 'I',
'Ï' => 'I',
'Ð' => 'D',
'Ñ' => 'N',
'Ò' => 'O',
'Ó' => 'O',
'Ô' => 'O',
'Õ' => 'O',
'Ö' => 'O',
'Ù' => 'U',
'Ú' => 'U',
'Û' => 'U',
'Ü' => 'U',
'Ý' => 'Y',
'Þ' => 'TH',
'ß' => 's',
'à' => 'a',
'á' => 'a',
'â' => 'a',
'ã' => 'a',
'ä' => 'a',
'å' => 'a',
'æ' => 'ae',
'ç' => 'c',
'è' => 'e',
'é' => 'e',
'ê' => 'e',
'ë' => 'e',
'ì' => 'i',
'í' => 'i',
'î' => 'i',
'ï' => 'i',
'ð' => 'd',
'ñ' => 'n',
'ò' => 'o',
'ó' => 'o',
'ô' => 'o',
'õ' => 'o',
'ö' => 'o',
'ø' => 'o',
'ù' => 'u',
'ú' => 'u',
'û' => 'u',
'ü' => 'u',
'ý' => 'y',
'þ' => 'th',
'ÿ' => 'y',
'Ø' => 'O',
// Decompositions for Latin Extended-A.
'Ā' => 'A',
'ā' => 'a',
'Ă' => 'A',
'ă' => 'a',
'Ą' => 'A',
'ą' => 'a',
'Ć' => 'C',
'ć' => 'c',
'Ĉ' => 'C',
'ĉ' => 'c',
'Ċ' => 'C',
'ċ' => 'c',
'Č' => 'C',
'č' => 'c',
'Ď' => 'D',
'ď' => 'd',
'Đ' => 'D',
'đ' => 'd',
'Ē' => 'E',
'ē' => 'e',
'Ĕ' => 'E',
'ĕ' => 'e',
'Ė' => 'E',
'ė' => 'e',
'Ę' => 'E',
'ę' => 'e',
'Ě' => 'E',
'ě' => 'e',
'Ĝ' => 'G',
'ĝ' => 'g',
'Ğ' => 'G',
'ğ' => 'g',
'Ġ' => 'G',
'ġ' => 'g',
'Ģ' => 'G',
'ģ' => 'g',
'Ĥ' => 'H',
'ĥ' => 'h',
'Ħ' => 'H',
'ħ' => 'h',
'Ĩ' => 'I',
'ĩ' => 'i',
'Ī' => 'I',
'ī' => 'i',
'Ĭ' => 'I',
'ĭ' => 'i',
'Į' => 'I',
'į' => 'i',
'İ' => 'I',
'ı' => 'i',
'IJ' => 'IJ',
'ij' => 'ij',
'Ĵ' => 'J',
'ĵ' => 'j',
'Ķ' => 'K',
'ķ' => 'k',
'ĸ' => 'k',
'Ĺ' => 'L',
'ĺ' => 'l',
'Ļ' => 'L',
'ļ' => 'l',
'Ľ' => 'L',
'ľ' => 'l',
'Ŀ' => 'L',
'ŀ' => 'l',
'Ł' => 'L',
'ł' => 'l',
'Ń' => 'N',
'ń' => 'n',
'Ņ' => 'N',
'ņ' => 'n',
'Ň' => 'N',
'ň' => 'n',
'ʼn' => 'n',
'Ŋ' => 'N',
'ŋ' => 'n',
'Ō' => 'O',
'ō' => 'o',
'Ŏ' => 'O',
'ŏ' => 'o',
'Ő' => 'O',
'ő' => 'o',
'Œ' => 'OE',
'œ' => 'oe',
'Ŕ' => 'R',
'ŕ' => 'r',
'Ŗ' => 'R',
'ŗ' => 'r',
'Ř' => 'R',
'ř' => 'r',
'Ś' => 'S',
'ś' => 's',
'Ŝ' => 'S',
'ŝ' => 's',
'Ş' => 'S',
'ş' => 's',
'Š' => 'S',
'š' => 's',
'Ţ' => 'T',
'ţ' => 't',
'Ť' => 'T',
'ť' => 't',
'Ŧ' => 'T',
'ŧ' => 't',
'Ũ' => 'U',
'ũ' => 'u',
'Ū' => 'U',
'ū' => 'u',
'Ŭ' => 'U',
'ŭ' => 'u',
'Ů' => 'U',
'ů' => 'u',
'Ű' => 'U',
'ű' => 'u',
'Ų' => 'U',
'ų' => 'u',
'Ŵ' => 'W',
'ŵ' => 'w',
'Ŷ' => 'Y',
'ŷ' => 'y',
'Ÿ' => 'Y',
'Ź' => 'Z',
'ź' => 'z',
'Ż' => 'Z',
'ż' => 'z',
'Ž' => 'Z',
'ž' => 'z',
'ſ' => 's',
// Decompositions for Latin Extended-B.
'Ə' => 'E',
'ǝ' => 'e',
'Ș' => 'S',
'ș' => 's',
'Ț' => 'T',
'ț' => 't',
// Euro sign.
'€' => 'E',
// GBP (Pound) sign.
'£' => '',
// Vowels with diacritic (Vietnamese). Unmarked.
'Ơ' => 'O',
'ơ' => 'o',
'Ư' => 'U',
'ư' => 'u',
// Grave accent.
'Ầ' => 'A',
'ầ' => 'a',
'Ằ' => 'A',
'ằ' => 'a',
'Ề' => 'E',
'ề' => 'e',
'Ồ' => 'O',
'ồ' => 'o',
'Ờ' => 'O',
'ờ' => 'o',
'Ừ' => 'U',
'ừ' => 'u',
'Ỳ' => 'Y',
'ỳ' => 'y',
// Hook.
'Ả' => 'A',
'ả' => 'a',
'Ẩ' => 'A',
'ẩ' => 'a',
'Ẳ' => 'A',
'ẳ' => 'a',
'Ẻ' => 'E',
'ẻ' => 'e',
'Ể' => 'E',
'ể' => 'e',
'Ỉ' => 'I',
'ỉ' => 'i',
'Ỏ' => 'O',
'ỏ' => 'o',
'Ổ' => 'O',
'ổ' => 'o',
'Ở' => 'O',
'ở' => 'o',
'Ủ' => 'U',
'ủ' => 'u',
'Ử' => 'U',
'ử' => 'u',
'Ỷ' => 'Y',
'ỷ' => 'y',
// Tilde.
'Ẫ' => 'A',
'ẫ' => 'a',
'Ẵ' => 'A',
'ẵ' => 'a',
'Ẽ' => 'E',
'ẽ' => 'e',
'Ễ' => 'E',
'ễ' => 'e',
'Ỗ' => 'O',
'ỗ' => 'o',
'Ỡ' => 'O',
'ỡ' => 'o',
'Ữ' => 'U',
'ữ' => 'u',
'Ỹ' => 'Y',
'ỹ' => 'y',
// Acute accent.
'Ấ' => 'A',
'ấ' => 'a',
'Ắ' => 'A',
'ắ' => 'a',
'Ế' => 'E',
'ế' => 'e',
'Ố' => 'O',
'ố' => 'o',
'Ớ' => 'O',
'ớ' => 'o',
'Ứ' => 'U',
'ứ' => 'u',
// Dot below.
'Ạ' => 'A',
'ạ' => 'a',
'Ậ' => 'A',
'ậ' => 'a',
'Ặ' => 'A',
'ặ' => 'a',
'Ẹ' => 'E',
'ẹ' => 'e',
'Ệ' => 'E',
'ệ' => 'e',
'Ị' => 'I',
'ị' => 'i',
'Ọ' => 'O',
'ọ' => 'o',
'Ộ' => 'O',
'ộ' => 'o',
'Ợ' => 'O',
'ợ' => 'o',
'Ụ' => 'U',
'ụ' => 'u',
'Ự' => 'U',
'ự' => 'u',
'Ỵ' => 'Y',
'ỵ' => 'y',
// Vowels with diacritic (Chinese, Hanyu Pinyin).
'ɑ' => 'a',
// Macron.
'Ǖ' => 'U',
'ǖ' => 'u',
// Acute accent.
'Ǘ' => 'U',
'ǘ' => 'u',
// Caron.
'Ǎ' => 'A',
'ǎ' => 'a',
'Ǐ' => 'I',
'ǐ' => 'i',
'Ǒ' => 'O',
'ǒ' => 'o',
'Ǔ' => 'U',
'ǔ' => 'u',
'Ǚ' => 'U',
'ǚ' => 'u',
// Grave accent.
'Ǜ' => 'U',
'ǜ' => 'u',
);
// Used for locale-specific rules.
if ( empty( $locale ) ) {
$locale = get_locale();
}
/*
* German has various locales (de_DE, de_CH, de_AT, ...) with formal and informal variants.
* There is no 3-letter locale like 'def', so checking for 'de' instead of 'de_' is safe,
* since 'de' itself would be a valid locale too.
*/
if ( str_starts_with( $locale, 'de' ) ) {
$chars['Ä'] = 'Ae';
$chars['ä'] = 'ae';
$chars['Ö'] = 'Oe';
$chars['ö'] = 'oe';
$chars['Ü'] = 'Ue';
$chars['ü'] = 'ue';
$chars['ß'] = 'ss';
} elseif ( 'da_DK' === $locale ) {
$chars['Æ'] = 'Ae';
$chars['æ'] = 'ae';
$chars['Ø'] = 'Oe';
$chars['ø'] = 'oe';
$chars['Å'] = 'Aa';
$chars['å'] = 'aa';
} elseif ( 'ca' === $locale ) {
$chars['l·l'] = 'll';
} elseif ( 'sr_RS' === $locale || 'bs_BA' === $locale ) {
$chars['Đ'] = 'DJ';
$chars['đ'] = 'dj';
}
$text = strtr( $text, $chars );
} else {
$chars = array();
// Assume ISO-8859-1 if not UTF-8.
$chars['in'] = "\x80\x83\x8a\x8e\x9a\x9e"
. "\x9f\xa2\xa5\xb5\xc0\xc1\xc2"
. "\xc3\xc4\xc5\xc7\xc8\xc9\xca"
. "\xcb\xcc\xcd\xce\xcf\xd1\xd2"
. "\xd3\xd4\xd5\xd6\xd8\xd9\xda"
. "\xdb\xdc\xdd\xe0\xe1\xe2\xe3"
. "\xe4\xe5\xe7\xe8\xe9\xea\xeb"
. "\xec\xed\xee\xef\xf1\xf2\xf3"
. "\xf4\xf5\xf6\xf8\xf9\xfa\xfb"
. "\xfc\xfd\xff";
$chars['out'] = 'EfSZszYcYuAAAAAACEEEEIIIINOOOOOOUUUUYaaaaaaceeeeiiiinoooooouuuuyy';
$text = strtr( $text, $chars['in'], $chars['out'] );
$double_chars = array();
$double_chars['in'] = array( "\x8c", "\x9c", "\xc6", "\xd0", "\xde", "\xdf", "\xe6", "\xf0", "\xfe" );
$double_chars['out'] = array( 'OE', 'oe', 'AE', 'DH', 'TH', 'ss', 'ae', 'dh', 'th' );
$text = str_replace( $double_chars['in'], $double_chars['out'], $text );
}
return $text;
}
/**
* Sanitizes a filename, replacing whitespace with dashes.
*
* Removes special characters that are illegal in filenames on certain
* operating systems and special characters requiring special escaping
* to manipulate at the command line. Replaces spaces and consecutive
* dashes with a single dash. Trims period, dash and underscore from beginning
* and end of filename. It is not guaranteed that this function will return a
* filename that is allowed to be uploaded.
*
* @since 2.1.0
*
* @param string $filename The filename to be sanitized.
* @return string The sanitized filename.
*/
function sanitize_file_name( $filename ) {
$filename_raw = $filename;
$filename = remove_accents( $filename );
$special_chars = array( '?', '[', ']', '/', '\\', '=', '<', '>', ':', ';', ',', "'", '"', '&', '$', '#', '*', '(', ')', '|', '~', '`', '!', '{', '}', '%', '+', '’', '«', '»', '”', '“', chr( 0 ) );
// Check for support for utf8 in the installed PCRE library once and store the result in a static.
static $utf8_pcre = null;
if ( ! isset( $utf8_pcre ) ) {
// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
$utf8_pcre = @preg_match( '/^./u', 'a' );
}
if ( ! seems_utf8( $filename ) ) {
$_ext = pathinfo( $filename, PATHINFO_EXTENSION );
$_name = pathinfo( $filename, PATHINFO_FILENAME );
$filename = sanitize_title_with_dashes( $_name ) . '.' . $_ext;
}
if ( $utf8_pcre ) {
$filename = preg_replace( "#\x{00a0}#siu", ' ', $filename );
}
/**
* Filters the list of characters to remove from a filename.
*
* @since 2.8.0
*
* @param string[] $special_chars Array of characters to remove.
* @param string $filename_raw The original filename to be sanitized.
*/
$special_chars = apply_filters( 'sanitize_file_name_chars', $special_chars, $filename_raw );
$filename = str_replace( $special_chars, '', $filename );
$filename = str_replace( array( '%20', '+' ), '-', $filename );
$filename = preg_replace( '/\.{2,}/', '.', $filename );
$filename = preg_replace( '/[\r\n\t -]+/', '-', $filename );
$filename = trim( $filename, '.-_' );
if ( ! str_contains( $filename, '.' ) ) {
$mime_types = wp_get_mime_types();
$filetype = wp_check_filetype( 'test.' . $filename, $mime_types );
if ( $filetype['ext'] === $filename ) {
$filename = 'unnamed-file.' . $filetype['ext'];
}
}
// Split the filename into a base and extension[s].
$parts = explode( '.', $filename );
// Return if only one extension.
if ( count( $parts ) <= 2 ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'sanitize_file_name', $filename, $filename_raw );
}
// Process multiple extensions.
$filename = array_shift( $parts );
$extension = array_pop( $parts );
$mimes = get_allowed_mime_types();
/*
* Loop over any intermediate extensions. Postfix them with a trailing underscore
* if they are a 2 - 5 character long alpha string not in the allowed extension list.
*/
foreach ( (array) $parts as $part ) {
$filename .= '.' . $part;
if ( preg_match( '/^[a-zA-Z]{2,5}\d?$/', $part ) ) {
$allowed = false;
foreach ( $mimes as $ext_preg => $mime_match ) {
$ext_preg = '!^(' . $ext_preg . ')$!i';
if ( preg_match( $ext_preg, $part ) ) {
$allowed = true;
break;
}
}
if ( ! $allowed ) {
$filename .= '_';
}
}
}
$filename .= '.' . $extension;
/**
* Filters a sanitized filename string.
*
* @since 2.8.0
*
* @param string $filename Sanitized filename.
* @param string $filename_raw The filename prior to sanitization.
*/
return apply_filters( 'sanitize_file_name', $filename, $filename_raw );
}
/**
* Sanitizes a username, stripping out unsafe characters.
*
* Removes tags, percent-encoded characters, HTML entities, and if strict is enabled,
* will only keep alphanumeric, _, space, ., -, @. After sanitizing, it passes the username,
* raw username (the username in the parameter), and the value of $strict as parameters
* for the {@see 'sanitize_user'} filter.
*
* @since 2.0.0
*
* @param string $username The username to be sanitized.
* @param bool $strict Optional. If set to true, limits $username to specific characters.
* Default false.
* @return string The sanitized username, after passing through filters.
*/
function sanitize_user( $username, $strict = false ) {
$raw_username = $username;
$username = wp_strip_all_tags( $username );
$username = remove_accents( $username );
// Remove percent-encoded characters.
$username = preg_replace( '|%([a-fA-F0-9][a-fA-F0-9])|', '', $username );
// Remove HTML entities.
$username = preg_replace( '/&.+?;/', '', $username );
// If strict, reduce to ASCII for max portability.
if ( $strict ) {
$username = preg_replace( '|[^a-z0-9 _.\-@]|i', '', $username );
}
$username = trim( $username );
// Consolidate contiguous whitespace.
$username = preg_replace( '|\s+|', ' ', $username );
/**
* Filters a sanitized username string.
*
* @since 2.0.1
*
* @param string $username Sanitized username.
* @param string $raw_username The username prior to sanitization.
* @param bool $strict Whether to limit the sanitization to specific characters.
*/
return apply_filters( 'sanitize_user', $username, $raw_username, $strict );
}
/**
* Sanitizes a string key.
*
* Keys are used as internal identifiers. Lowercase alphanumeric characters,
* dashes, and underscores are allowed.
*
* @since 3.0.0
*
* @param string $key String key.
* @return string Sanitized key.
*/
function sanitize_key( $key ) {
$sanitized_key = '';
if ( is_scalar( $key ) ) {
$sanitized_key = strtolower( $key );
$sanitized_key = preg_replace( '/[^a-z0-9_\-]/', '', $sanitized_key );
}
/**
* Filters a sanitized key string.
*
* @since 3.0.0
*
* @param string $sanitized_key Sanitized key.
* @param string $key The key prior to sanitization.
*/
return apply_filters( 'sanitize_key', $sanitized_key, $key );
}
/**
* Sanitizes a string into a slug, which can be used in URLs or HTML attributes.
*
* By default, converts accent characters to ASCII characters and further
* limits the output to alphanumeric characters, underscore (_) and dash (-)
* through the {@see 'sanitize_title'} filter.
*
* If `$title` is empty and `$fallback_title` is set, the latter will be used.
*
* @since 1.0.0
*
* @param string $title The string to be sanitized.
* @param string $fallback_title Optional. A title to use if $title is empty. Default empty.
* @param string $context Optional. The operation for which the string is sanitized.
* When set to 'save', the string runs through remove_accents().
* Default 'save'.
* @return string The sanitized string.
*/
function sanitize_title( $title, $fallback_title = '', $context = 'save' ) {
$raw_title = $title;
if ( 'save' === $context ) {
$title = remove_accents( $title );
}
/**
* Filters a sanitized title string.
*
* @since 1.2.0
*
* @param string $title Sanitized title.
* @param string $raw_title The title prior to sanitization.
* @param string $context The context for which the title is being sanitized.
*/
$title = apply_filters( 'sanitize_title', $title, $raw_title, $context );
if ( '' === $title || false === $title ) {
$title = $fallback_title;
}
return $title;
}
/**
* Sanitizes a title with the 'query' context.
*
* Used for querying the database for a value from URL.
*
* @since 3.1.0
*
* @param string $title The string to be sanitized.
* @return string The sanitized string.
*/
function sanitize_title_for_query( $title ) {
return sanitize_title( $title, '', 'query' );
}
/**
* Sanitizes a title, replacing whitespace and a few other characters with dashes.
*
* Limits the output to alphanumeric characters, underscore (_) and dash (-).
* Whitespace becomes a dash.
*
* @since 1.2.0
*
* @param string $title The title to be sanitized.
* @param string $raw_title Optional. Not used. Default empty.
* @param string $context Optional. The operation for which the string is sanitized.
* When set to 'save', additional entities are converted to hyphens
* or stripped entirely. Default 'display'.
* @return string The sanitized title.
*/
function sanitize_title_with_dashes( $title, $raw_title = '', $context = 'display' ) {
$title = strip_tags( $title );
// Preserve escaped octets.
$title = preg_replace( '|%([a-fA-F0-9][a-fA-F0-9])|', '---$1---', $title );
// Remove percent signs that are not part of an octet.
$title = str_replace( '%', '', $title );
// Restore octets.
$title = preg_replace( '|---([a-fA-F0-9][a-fA-F0-9])---|', '%$1', $title );
if ( seems_utf8( $title ) ) {
if ( function_exists( 'mb_strtolower' ) ) {
$title = mb_strtolower( $title, 'UTF-8' );
}
$title = utf8_uri_encode( $title, 200 );
}
$title = strtolower( $title );
if ( 'save' === $context ) {
// Convert &nbsp, &ndash, and &mdash to hyphens.
$title = str_replace( array( '%c2%a0', '%e2%80%93', '%e2%80%94' ), '-', $title );
// Convert &nbsp, &ndash, and &mdash HTML entities to hyphens.
$title = str_replace( array( '&nbsp;', '&#160;', '&ndash;', '&#8211;', '&mdash;', '&#8212;' ), '-', $title );
// Convert forward slash to hyphen.
$title = str_replace( '/', '-', $title );
// Strip these characters entirely.
$title = str_replace(
array(
// Soft hyphens.
'%c2%ad',
// &iexcl and &iquest.
'%c2%a1',
'%c2%bf',
// Angle quotes.
'%c2%ab',
'%c2%bb',
'%e2%80%b9',
'%e2%80%ba',
// Curly quotes.
'%e2%80%98',
'%e2%80%99',
'%e2%80%9c',
'%e2%80%9d',
'%e2%80%9a',
'%e2%80%9b',
'%e2%80%9e',
'%e2%80%9f',
// Bullet.
'%e2%80%a2',
// &copy, &reg, &deg, &hellip, and &trade.
'%c2%a9',
'%c2%ae',
'%c2%b0',
'%e2%80%a6',
'%e2%84%a2',
// Acute accents.
'%c2%b4',
'%cb%8a',
'%cc%81',
'%cd%81',
// Grave accent, macron, caron.
'%cc%80',
'%cc%84',
'%cc%8c',
// Non-visible characters that display without a width.
'%e2%80%8b', // Zero width space.
'%e2%80%8c', // Zero width non-joiner.
'%e2%80%8d', // Zero width joiner.
'%e2%80%8e', // Left-to-right mark.
'%e2%80%8f', // Right-to-left mark.
'%e2%80%aa', // Left-to-right embedding.
'%e2%80%ab', // Right-to-left embedding.
'%e2%80%ac', // Pop directional formatting.
'%e2%80%ad', // Left-to-right override.
'%e2%80%ae', // Right-to-left override.
'%ef%bb%bf', // Byte order mark.
'%ef%bf%bc', // Object replacement character.
),
'',
$title
);
// Convert non-visible characters that display with a width to hyphen.
$title = str_replace(
array(
'%e2%80%80', // En quad.
'%e2%80%81', // Em quad.
'%e2%80%82', // En space.
'%e2%80%83', // Em space.
'%e2%80%84', // Three-per-em space.
'%e2%80%85', // Four-per-em space.
'%e2%80%86', // Six-per-em space.
'%e2%80%87', // Figure space.
'%e2%80%88', // Punctuation space.
'%e2%80%89', // Thin space.
'%e2%80%8a', // Hair space.
'%e2%80%a8', // Line separator.
'%e2%80%a9', // Paragraph separator.
'%e2%80%af', // Narrow no-break space.
),
'-',
$title
);
// Convert &times to 'x'.
$title = str_replace( '%c3%97', 'x', $title );
}
// Remove HTML entities.
$title = preg_replace( '/&.+?;/', '', $title );
$title = str_replace( '.', '-', $title );
$title = preg_replace( '/[^%a-z0-9 _-]/', '', $title );
$title = preg_replace( '/\s+/', '-', $title );
$title = preg_replace( '|-+|', '-', $title );
$title = trim( $title, '-' );
return $title;
}
/**
* Ensures a string is a valid SQL 'order by' clause.
*
* Accepts one or more columns, with or without a sort order (ASC / DESC).
* e.g. 'column_1', 'column_1, column_2', 'column_1 ASC, column_2 DESC' etc.
*
* Also accepts 'RAND()'.
*
* @since 2.5.1
*
* @param string $orderby Order by clause to be validated.
* @return string|false Returns $orderby if valid, false otherwise.
*/
function sanitize_sql_orderby( $orderby ) {
if ( preg_match( '/^\s*(([a-z0-9_]+|`[a-z0-9_]+`)(\s+(ASC|DESC))?\s*(,\s*(?=[a-z0-9_`])|$))+$/i', $orderby ) || preg_match( '/^\s*RAND\(\s*\)\s*$/i', $orderby ) ) {
return $orderby;
}
return false;
}
/**
* Sanitizes an HTML classname to ensure it only contains valid characters.
*
* Strips the string down to A-Z,a-z,0-9,_,-. If this results in an empty
* string then it will return the alternative value supplied.
*
* @todo Expand to support the full range of CDATA that a class attribute can contain.
*
* @since 2.8.0
*
* @param string $classname The classname to be sanitized.
* @param string $fallback Optional. The value to return if the sanitization ends up as an empty string.
* Default empty string.
* @return string The sanitized value.
*/
function sanitize_html_class( $classname, $fallback = '' ) {
// Strip out any percent-encoded characters.
$sanitized = preg_replace( '|%[a-fA-F0-9][a-fA-F0-9]|', '', $classname );
// Limit to A-Z, a-z, 0-9, '_', '-'.
$sanitized = preg_replace( '/[^A-Za-z0-9_-]/', '', $sanitized );
if ( '' === $sanitized && $fallback ) {
return sanitize_html_class( $fallback );
}
/**
* Filters a sanitized HTML class string.
*
* @since 2.8.0
*
* @param string $sanitized The sanitized HTML class.
* @param string $classname HTML class before sanitization.
* @param string $fallback The fallback string.
*/
return apply_filters( 'sanitize_html_class', $sanitized, $classname, $fallback );
}
/**
* Strips out all characters not allowed in a locale name.
*
* @since 6.2.1
*
* @param string $locale_name The locale name to be sanitized.
* @return string The sanitized value.
*/
function sanitize_locale_name( $locale_name ) {
// Limit to A-Z, a-z, 0-9, '_', '-'.
$sanitized = preg_replace( '/[^A-Za-z0-9_-]/', '', $locale_name );
/**
* Filters a sanitized locale name string.
*
* @since 6.2.1
*
* @param string $sanitized The sanitized locale name.
* @param string $locale_name The locale name before sanitization.
*/
return apply_filters( 'sanitize_locale_name', $sanitized, $locale_name );
}
/**
* Converts lone & characters into `&#038;` (a.k.a. `&amp;`)
*
* @since 0.71
*
* @param string $content String of characters to be converted.
* @param string $deprecated Not used.
* @return string Converted string.
*/
function convert_chars( $content, $deprecated = '' ) {
if ( ! empty( $deprecated ) ) {
_deprecated_argument( __FUNCTION__, '0.71' );
}
if ( str_contains( $content, '&' ) ) {
$content = preg_replace( '/&([^#])(?![a-z1-4]{1,8};)/i', '&#038;$1', $content );
}
return $content;
}
/**
* Converts invalid Unicode references range to valid range.
*
* @since 4.3.0
*
* @param string $content String with entities that need converting.
* @return string Converted string.
*/
function convert_invalid_entities( $content ) {
$wp_htmltranswinuni = array(
'&#128;' => '&#8364;', // The Euro sign.
'&#129;' => '',
'&#130;' => '&#8218;', // These are Windows CP1252 specific characters.
'&#131;' => '&#402;', // They would look weird on non-Windows browsers.
'&#132;' => '&#8222;',
'&#133;' => '&#8230;',
'&#134;' => '&#8224;',
'&#135;' => '&#8225;',
'&#136;' => '&#710;',
'&#137;' => '&#8240;',
'&#138;' => '&#352;',
'&#139;' => '&#8249;',
'&#140;' => '&#338;',
'&#141;' => '',
'&#142;' => '&#381;',
'&#143;' => '',
'&#144;' => '',
'&#145;' => '&#8216;',
'&#146;' => '&#8217;',
'&#147;' => '&#8220;',
'&#148;' => '&#8221;',
'&#149;' => '&#8226;',
'&#150;' => '&#8211;',
'&#151;' => '&#8212;',
'&#152;' => '&#732;',
'&#153;' => '&#8482;',
'&#154;' => '&#353;',
'&#155;' => '&#8250;',
'&#156;' => '&#339;',
'&#157;' => '',
'&#158;' => '&#382;',
'&#159;' => '&#376;',
);
if ( str_contains( $content, '&#1' ) ) {
$content = strtr( $content, $wp_htmltranswinuni );
}
return $content;
}
/**
* Balances tags if forced to, or if the 'use_balanceTags' option is set to true.
*
* @since 0.71
*
* @param string $text Text to be balanced
* @param bool $force If true, forces balancing, ignoring the value of the option. Default false.
* @return string Balanced text
*/
function balanceTags( $text, $force = false ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
if ( $force || (int) get_option( 'use_balanceTags' ) === 1 ) {
return force_balance_tags( $text );
} else {
return $text;
}
}
/**
* Balances tags of string using a modified stack.
*
* @since 2.0.4
* @since 5.3.0 Improve accuracy and add support for custom element tags.
*
* @author Leonard Lin <leonard@acm.org>
* @license GPL
* @copyright November 4, 2001
* @version 1.1
* @todo Make better - change loop condition to $text in 1.2
* @internal Modified by Scott Reilly (coffee2code) 02 Aug 2004
* 1.1 Fixed handling of append/stack pop order of end text
* Added Cleaning Hooks
* 1.0 First Version
*
* @param string $text Text to be balanced.
* @return string Balanced text.
*/
function force_balance_tags( $text ) {
$tagstack = array();
$stacksize = 0;
$tagqueue = '';
$newtext = '';
// Known single-entity/self-closing tags.
$single_tags = array( 'area', 'base', 'basefont', 'br', 'col', 'command', 'embed', 'frame', 'hr', 'img', 'input', 'isindex', 'link', 'meta', 'param', 'source', 'track', 'wbr' );
// Tags that can be immediately nested within themselves.
$nestable_tags = array( 'article', 'aside', 'blockquote', 'details', 'div', 'figure', 'object', 'q', 'section', 'span' );
// WP bug fix for comments - in case you REALLY meant to type '< !--'.
$text = str_replace( '< !--', '< !--', $text );
// WP bug fix for LOVE <3 (and other situations with '<' before a number).
$text = preg_replace( '#<([0-9]{1})#', '&lt;$1', $text );
/**
* Matches supported tags.
*
* To get the pattern as a string without the comments paste into a PHP
* REPL like `php -a`.
*
* @see https://html.spec.whatwg.org/#elements-2
* @see https://html.spec.whatwg.org/multipage/custom-elements.html#valid-custom-element-name
*
* @example
* ~# php -a
* php > $s = [paste copied contents of expression below including parentheses];
* php > echo $s;
*/
$tag_pattern = (
'#<' . // Start with an opening bracket.
'(/?)' . // Group 1 - If it's a closing tag it'll have a leading slash.
'(' . // Group 2 - Tag name.
// Custom element tags have more lenient rules than HTML tag names.
'(?:[a-z](?:[a-z0-9._]*)-(?:[a-z0-9._-]+)+)' .
'|' .
// Traditional tag rules approximate HTML tag names.
'(?:[\w:]+)' .
')' .
'(?:' .
// We either immediately close the tag with its '>' and have nothing here.
'\s*' .
'(/?)' . // Group 3 - "attributes" for empty tag.
'|' .
// Or we must start with space characters to separate the tag name from the attributes (or whitespace).
'(\s+)' . // Group 4 - Pre-attribute whitespace.
'([^>]*)' . // Group 5 - Attributes.
')' .
'>#' // End with a closing bracket.
);
while ( preg_match( $tag_pattern, $text, $regex ) ) {
$full_match = $regex[0];
$has_leading_slash = ! empty( $regex[1] );
$tag_name = $regex[2];
$tag = strtolower( $tag_name );
$is_single_tag = in_array( $tag, $single_tags, true );
$pre_attribute_ws = isset( $regex[4] ) ? $regex[4] : '';
$attributes = trim( isset( $regex[5] ) ? $regex[5] : $regex[3] );
$has_self_closer = str_ends_with( $attributes, '/' );
$newtext .= $tagqueue;
$i = strpos( $text, $full_match );
$l = strlen( $full_match );
// Clear the shifter.
$tagqueue = '';
if ( $has_leading_slash ) { // End tag.
// If too many closing tags.
if ( $stacksize <= 0 ) {
$tag = '';
// Or close to be safe $tag = '/' . $tag.
// If stacktop value = tag close value, then pop.
} elseif ( $tagstack[ $stacksize - 1 ] === $tag ) { // Found closing tag.
$tag = '</' . $tag . '>'; // Close tag.
array_pop( $tagstack );
--$stacksize;
} else { // Closing tag not at top, search for it.
for ( $j = $stacksize - 1; $j >= 0; $j-- ) {
if ( $tagstack[ $j ] === $tag ) {
// Add tag to tagqueue.
for ( $k = $stacksize - 1; $k >= $j; $k-- ) {
$tagqueue .= '</' . array_pop( $tagstack ) . '>';
--$stacksize;
}
break;
}
}
$tag = '';
}
} else { // Begin tag.
if ( $has_self_closer ) {
/*
* If it presents itself as a self-closing tag, but it isn't a known single-entity self-closing tag,
* then don't let it be treated as such and immediately close it with a closing tag.
* The tag will encapsulate no text as a result.
*/
if ( ! $is_single_tag ) {
$attributes = trim( substr( $attributes, 0, -1 ) ) . "></$tag";
}
} elseif ( $is_single_tag ) {
// Else if it's a known single-entity tag but it doesn't close itself, do so.
$pre_attribute_ws = ' ';
$attributes .= '/';
} else {
/*
* It's not a single-entity tag.
* If the top of the stack is the same as the tag we want to push, close previous tag.
*/
if ( $stacksize > 0 && ! in_array( $tag, $nestable_tags, true ) && $tagstack[ $stacksize - 1 ] === $tag ) {
$tagqueue = '</' . array_pop( $tagstack ) . '>';
--$stacksize;
}
$stacksize = array_push( $tagstack, $tag );
}
// Attributes.
if ( $has_self_closer && $is_single_tag ) {
// We need some space - avoid <br/> and prefer <br />.
$pre_attribute_ws = ' ';
}
$tag = '<' . $tag . $pre_attribute_ws . $attributes . '>';
// If already queuing a close tag, then put this tag on too.
if ( ! empty( $tagqueue ) ) {
$tagqueue .= $tag;
$tag = '';
}
}
$newtext .= substr( $text, 0, $i ) . $tag;
$text = substr( $text, $i + $l );
}
// Clear tag queue.
$newtext .= $tagqueue;
// Add remaining text.
$newtext .= $text;
while ( $x = array_pop( $tagstack ) ) {
$newtext .= '</' . $x . '>'; // Add remaining tags to close.
}
// WP fix for the bug with HTML comments.
$newtext = str_replace( '< !--', '<!--', $newtext );
$newtext = str_replace( '< !--', '< !--', $newtext );
return $newtext;
}
/**
* Acts on text which is about to be edited.
*
* The $content is run through esc_textarea(), which uses htmlspecialchars()
* to convert special characters to HTML entities. If `$richedit` is set to true,
* it is simply a holder for the {@see 'format_to_edit'} filter.
*
* @since 0.71
* @since 4.4.0 The `$richedit` parameter was renamed to `$rich_text` for clarity.
*
* @param string $content The text about to be edited.
* @param bool $rich_text Optional. Whether `$content` should be considered rich text,
* in which case it would not be passed through esc_textarea().
* Default false.
* @return string The text after the filter (and possibly htmlspecialchars()) has been run.
*/
function format_to_edit( $content, $rich_text = false ) {
/**
* Filters the text to be formatted for editing.
*
* @since 1.2.0
*
* @param string $content The text, prior to formatting for editing.
*/
$content = apply_filters( 'format_to_edit', $content );
if ( ! $rich_text ) {
$content = esc_textarea( $content );
}
return $content;
}
/**
* Add leading zeros when necessary.
*
* If you set the threshold to '4' and the number is '10', then you will get
* back '0010'. If you set the threshold to '4' and the number is '5000', then you
* will get back '5000'.
*
* Uses sprintf to append the amount of zeros based on the $threshold parameter
* and the size of the number. If the number is large enough, then no zeros will
* be appended.
*
* @since 0.71
*
* @param int $number Number to append zeros to if not greater than threshold.
* @param int $threshold Digit places number needs to be to not have zeros added.
* @return string Adds leading zeros to number if needed.
*/
function zeroise( $number, $threshold ) {
return sprintf( '%0' . $threshold . 's', $number );
}
/**
* Adds backslashes before letters and before a number at the start of a string.
*
* @since 0.71
*
* @param string $value Value to which backslashes will be added.
* @return string String with backslashes inserted.
*/
function backslashit( $value ) {
if ( isset( $value[0] ) && $value[0] >= '0' && $value[0] <= '9' ) {
$value = '\\\\' . $value;
}
return addcslashes( $value, 'A..Za..z' );
}
/**
* Appends a trailing slash.
*
* Will remove trailing forward and backslashes if it exists already before adding
* a trailing forward slash. This prevents double slashing a string or path.
*
* The primary use of this is for paths and thus should be used for paths. It is
* not restricted to paths and offers no specific path support.
*
* @since 1.2.0
*
* @param string $value Value to which trailing slash will be added.
* @return string String with trailing slash added.
*/
function trailingslashit( $value ) {
return untrailingslashit( $value ) . '/';
}
/**
* Removes trailing forward slashes and backslashes if they exist.
*
* The primary use of this is for paths and thus should be used for paths. It is
* not restricted to paths and offers no specific path support.
*
* @since 2.2.0
*
* @param string $text Value from which trailing slashes will be removed.
* @return string String without the trailing slashes.
*/
function untrailingslashit( $value ) {
return rtrim( $value, '/\\' );
}
/**
* Adds slashes to a string or recursively adds slashes to strings within an array.
*
* @since 0.71
*
* @param string|array $gpc String or array of data to slash.
* @return string|array Slashed `$gpc`.
*/
function addslashes_gpc( $gpc ) {
return wp_slash( $gpc );
}
/**
* Navigates through an array, object, or scalar, and removes slashes from the values.
*
* @since 2.0.0
*
* @param mixed $value The value to be stripped.
* @return mixed Stripped value.
*/
function stripslashes_deep( $value ) {
return map_deep( $value, 'stripslashes_from_strings_only' );
}
/**
* Callback function for `stripslashes_deep()` which strips slashes from strings.
*
* @since 4.4.0
*
* @param mixed $value The array or string to be stripped.
* @return mixed The stripped value.
*/
function stripslashes_from_strings_only( $value ) {
return is_string( $value ) ? stripslashes( $value ) : $value;
}
/**
* Navigates through an array, object, or scalar, and encodes the values to be used in a URL.
*
* @since 2.2.0
*
* @param mixed $value The array or string to be encoded.
* @return mixed The encoded value.
*/
function urlencode_deep( $value ) {
return map_deep( $value, 'urlencode' );
}
/**
* Navigates through an array, object, or scalar, and raw-encodes the values to be used in a URL.
*
* @since 3.4.0
*
* @param mixed $value The array or string to be encoded.
* @return mixed The encoded value.
*/
function rawurlencode_deep( $value ) {
return map_deep( $value, 'rawurlencode' );
}
/**
* Navigates through an array, object, or scalar, and decodes URL-encoded values
*
* @since 4.4.0
*
* @param mixed $value The array or string to be decoded.
* @return mixed The decoded value.
*/
function urldecode_deep( $value ) {
return map_deep( $value, 'urldecode' );
}
/**
* Converts email addresses characters to HTML entities to block spam bots.
*
* @since 0.71
*
* @param string $email_address Email address.
* @param int $hex_encoding Optional. Set to 1 to enable hex encoding.
* @return string Converted email address.
*/
function antispambot( $email_address, $hex_encoding = 0 ) {
$email_no_spam_address = '';
for ( $i = 0, $len = strlen( $email_address ); $i < $len; $i++ ) {
$j = rand( 0, 1 + $hex_encoding );
if ( 0 === $j ) {
$email_no_spam_address .= '&#' . ord( $email_address[ $i ] ) . ';';
} elseif ( 1 === $j ) {
$email_no_spam_address .= $email_address[ $i ];
} elseif ( 2 === $j ) {
$email_no_spam_address .= '%' . zeroise( dechex( ord( $email_address[ $i ] ) ), 2 );
}
}
return str_replace( '@', '&#64;', $email_no_spam_address );
}
/**
* Callback to convert URI match to HTML A element.
*
* This function was backported from 2.5.0 to 2.3.2. Regex callback for make_clickable().
*
* @since 2.3.2
* @access private
*
* @param array $matches Single Regex Match.
* @return string HTML A element with URI address.
*/
function _make_url_clickable_cb( $matches ) {
$url = $matches[2];
if ( ')' === $matches[3] && strpos( $url, '(' ) ) {
/*
* If the trailing character is a closing parethesis, and the URL has an opening parenthesis in it,
* add the closing parenthesis to the URL. Then we can let the parenthesis balancer do its thing below.
*/
$url .= $matches[3];
$suffix = '';
} else {
$suffix = $matches[3];
}
// Include parentheses in the URL only if paired.
while ( substr_count( $url, '(' ) < substr_count( $url, ')' ) ) {
$suffix = strrchr( $url, ')' ) . $suffix;
$url = substr( $url, 0, strrpos( $url, ')' ) );
}
$url = esc_url( $url );
if ( empty( $url ) ) {
return $matches[0];
}
$rel_attr = _make_clickable_rel_attr( $url );
return $matches[1] . "<a href=\"{$url}\"{$rel_attr}>{$url}</a>" . $suffix;
}
/**
* Callback to convert URL match to HTML A element.
*
* This function was backported from 2.5.0 to 2.3.2. Regex callback for make_clickable().
*
* @since 2.3.2
* @access private
*
* @param array $matches Single Regex Match.
* @return string HTML A element with URL address.
*/
function _make_web_ftp_clickable_cb( $matches ) {
$ret = '';
$dest = $matches[2];
$dest = 'http://' . $dest;
// Removed trailing [.,;:)] from URL.
$last_char = substr( $dest, -1 );
if ( in_array( $last_char, array( '.', ',', ';', ':', ')' ), true ) === true ) {
$ret = $last_char;
$dest = substr( $dest, 0, strlen( $dest ) - 1 );
}
$dest = esc_url( $dest );
if ( empty( $dest ) ) {
return $matches[0];
}
$rel_attr = _make_clickable_rel_attr( $dest );
return $matches[1] . "<a href=\"{$dest}\"{$rel_attr}>{$dest}</a>{$ret}";
}
/**
* Callback to convert email address match to HTML A element.
*
* This function was backported from 2.5.0 to 2.3.2. Regex callback for make_clickable().
*
* @since 2.3.2
* @access private
*
* @param array $matches Single Regex Match.
* @return string HTML A element with email address.
*/
function _make_email_clickable_cb( $matches ) {
$email = $matches[2] . '@' . $matches[3];
return $matches[1] . "<a href=\"mailto:{$email}\">{$email}</a>";
}
/**
* Helper function used to build the "rel" attribute for a URL when creating an anchor using make_clickable().
*
* @since 6.2.0
*
* @param string $url The URL.
* @return string The rel attribute for the anchor or an empty string if no rel attribute should be added.
*/
function _make_clickable_rel_attr( $url ) {
$rel_parts = array();
$scheme = strtolower( wp_parse_url( $url, PHP_URL_SCHEME ) );
$nofollow_schemes = array_intersect( wp_allowed_protocols(), array( 'https', 'http' ) );
// Apply "nofollow" to external links with qualifying URL schemes (mailto:, tel:, etc... shouldn't be followed).
if ( ! wp_is_internal_link( $url ) && in_array( $scheme, $nofollow_schemes, true ) ) {
$rel_parts[] = 'nofollow';
}
// Apply "ugc" when in comment context.
if ( 'comment_text' === current_filter() ) {
$rel_parts[] = 'ugc';
}
$rel = implode( ' ', $rel_parts );
/**
* Filters the rel value that is added to URL matches converted to links.
*
* @since 5.3.0
*
* @param string $rel The rel value.
* @param string $url The matched URL being converted to a link tag.
*/
$rel = apply_filters( 'make_clickable_rel', $rel, $url );
$rel_attr = $rel ? ' rel="' . esc_attr( $rel ) . '"' : '';
return $rel_attr;
}
/**
* Converts plaintext URI to HTML links.
*
* Converts URI, www and ftp, and email addresses. Finishes by fixing links
* within links.
*
* @since 0.71
*
* @param string $text Content to convert URIs.
* @return string Content with converted URIs.
*/
function make_clickable( $text ) {
$r = '';
$textarr = preg_split( '/(<[^<>]+>)/', $text, -1, PREG_SPLIT_DELIM_CAPTURE ); // Split out HTML tags.
$nested_code_pre = 0; // Keep track of how many levels link is nested inside <pre> or <code>.
foreach ( $textarr as $piece ) {
if ( preg_match( '|^<code[\s>]|i', $piece )
|| preg_match( '|^<pre[\s>]|i', $piece )
|| preg_match( '|^<script[\s>]|i', $piece )
|| preg_match( '|^<style[\s>]|i', $piece )
) {
++$nested_code_pre;
} elseif ( $nested_code_pre
&& ( '</code>' === strtolower( $piece )
|| '</pre>' === strtolower( $piece )
|| '</script>' === strtolower( $piece )
|| '</style>' === strtolower( $piece )
)
) {
--$nested_code_pre;
}
if ( $nested_code_pre
|| empty( $piece )
|| ( '<' === $piece[0] && ! preg_match( '|^<\s*[\w]{1,20}+://|', $piece ) )
) {
$r .= $piece;
continue;
}
// Long strings might contain expensive edge cases...
if ( 10000 < strlen( $piece ) ) {
// ...break it up.
foreach ( _split_str_by_whitespace( $piece, 2100 ) as $chunk ) { // 2100: Extra room for scheme and leading and trailing paretheses.
if ( 2101 < strlen( $chunk ) ) {
$r .= $chunk; // Too big, no whitespace: bail.
} else {
$r .= make_clickable( $chunk );
}
}
} else {
$ret = " $piece "; // Pad with whitespace to simplify the regexes.
$url_clickable = '~
([\\s(<.,;:!?]) # 1: Leading whitespace, or punctuation.
( # 2: URL.
[\\w]{1,20}+:// # Scheme and hier-part prefix.
(?=\S{1,2000}\s) # Limit to URLs less than about 2000 characters long.
[\\w\\x80-\\xff#%\\~/@\\[\\]*(+=&$-]*+ # Non-punctuation URL character.
(?: # Unroll the Loop: Only allow puctuation URL character if followed by a non-punctuation URL character.
[\'.,;:!?)] # Punctuation URL character.
[\\w\\x80-\\xff#%\\~/@\\[\\]*(+=&$-]++ # Non-punctuation URL character.
)*
)
(\)?) # 3: Trailing closing parenthesis (for parethesis balancing post processing).
~xS';
/*
* The regex is a non-anchored pattern and does not have a single fixed starting character.
* Tell PCRE to spend more time optimizing since, when used on a page load, it will probably be used several times.
*/
$ret = preg_replace_callback( $url_clickable, '_make_url_clickable_cb', $ret );
$ret = preg_replace_callback( '#([\s>])((www|ftp)\.[\w\\x80-\\xff\#$%&~/.\-;:=,?@\[\]+]+)#is', '_make_web_ftp_clickable_cb', $ret );
$ret = preg_replace_callback( '#([\s>])([.0-9a-z_+-]+)@(([0-9a-z-]+\.)+[0-9a-z]{2,})#i', '_make_email_clickable_cb', $ret );
$ret = substr( $ret, 1, -1 ); // Remove our whitespace padding.
$r .= $ret;
}
}
// Cleanup of accidental links within links.
return preg_replace( '#(<a([ \r\n\t]+[^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i', '$1$3</a>', $r );
}
/**
* Breaks a string into chunks by splitting at whitespace characters.
*
* The length of each returned chunk is as close to the specified length goal as possible,
* with the caveat that each chunk includes its trailing delimiter.
* Chunks longer than the goal are guaranteed to not have any inner whitespace.
*
* Joining the returned chunks with empty delimiters reconstructs the input string losslessly.
*
* Input string must have no null characters (or eventual transformations on output chunks must not care about null characters)
*
* _split_str_by_whitespace( "1234 67890 1234 67890a cd 1234 890 123456789 1234567890a 45678 1 3 5 7 90 ", 10 ) ==
* array (
* 0 => '1234 67890 ', // 11 characters: Perfect split.
* 1 => '1234 ', // 5 characters: '1234 67890a' was too long.
* 2 => '67890a cd ', // 10 characters: '67890a cd 1234' was too long.
* 3 => '1234 890 ', // 11 characters: Perfect split.
* 4 => '123456789 ', // 10 characters: '123456789 1234567890a' was too long.
* 5 => '1234567890a ', // 12 characters: Too long, but no inner whitespace on which to split.
* 6 => ' 45678 ', // 11 characters: Perfect split.
* 7 => '1 3 5 7 90 ', // 11 characters: End of $text.
* );
*
* @since 3.4.0
* @access private
*
* @param string $text The string to split.
* @param int $goal The desired chunk length.
* @return array Numeric array of chunks.
*/
function _split_str_by_whitespace( $text, $goal ) {
$chunks = array();
$string_nullspace = strtr( $text, "\r\n\t\v\f ", "\000\000\000\000\000\000" );
while ( $goal < strlen( $string_nullspace ) ) {
$pos = strrpos( substr( $string_nullspace, 0, $goal + 1 ), "\000" );
if ( false === $pos ) {
$pos = strpos( $string_nullspace, "\000", $goal + 1 );
if ( false === $pos ) {
break;
}
}
$chunks[] = substr( $text, 0, $pos + 1 );
$text = substr( $text, $pos + 1 );
$string_nullspace = substr( $string_nullspace, $pos + 1 );
}
if ( $text ) {
$chunks[] = $text;
}
return $chunks;
}
/**
* Callback to add a rel attribute to HTML A element.
*
* Will remove already existing string before adding to prevent invalidating (X)HTML.
*
* @since 5.3.0
*
* @param array $matches Single match.
* @param string $rel The rel attribute to add.
* @return string HTML A element with the added rel attribute.
*/
function wp_rel_callback( $matches, $rel ) {
$text = $matches[1];
$atts = wp_kses_hair( $matches[1], wp_allowed_protocols() );
if ( ! empty( $atts['href'] ) && wp_is_internal_link( $atts['href']['value'] ) ) {
$rel = trim( str_replace( 'nofollow', '', $rel ) );
}
if ( ! empty( $atts['rel'] ) ) {
$parts = array_map( 'trim', explode( ' ', $atts['rel']['value'] ) );
$rel_array = array_map( 'trim', explode( ' ', $rel ) );
$parts = array_unique( array_merge( $parts, $rel_array ) );
$rel = implode( ' ', $parts );
unset( $atts['rel'] );
$html = '';
foreach ( $atts as $name => $value ) {
if ( isset( $value['vless'] ) && 'y' === $value['vless'] ) {
$html .= $name . ' ';
} else {
$html .= "{$name}=\"" . esc_attr( $value['value'] ) . '" ';
}
}
$text = trim( $html );
}
$rel_attr = $rel ? ' rel="' . esc_attr( $rel ) . '"' : '';
return "<a {$text}{$rel_attr}>";
}
/**
* Adds `rel="nofollow"` string to all HTML A elements in content.
*
* @since 1.5.0
*
* @param string $text Content that may contain HTML A elements.
* @return string Converted content.
*/
function wp_rel_nofollow( $text ) {
// This is a pre-save filter, so text is already escaped.
$text = stripslashes( $text );
$text = preg_replace_callback(
'|<a (.+?)>|i',
static function ( $matches ) {
return wp_rel_callback( $matches, 'nofollow' );
},
$text
);
return wp_slash( $text );
}
/**
* Callback to add `rel="nofollow"` string to HTML A element.
*
* @since 2.3.0
* @deprecated 5.3.0 Use wp_rel_callback()
*
* @param array $matches Single match.
* @return string HTML A Element with `rel="nofollow"`.
*/
function wp_rel_nofollow_callback( $matches ) {
return wp_rel_callback( $matches, 'nofollow' );
}
/**
* Adds `rel="nofollow ugc"` string to all HTML A elements in content.
*
* @since 5.3.0
*
* @param string $text Content that may contain HTML A elements.
* @return string Converted content.
*/
function wp_rel_ugc( $text ) {
// This is a pre-save filter, so text is already escaped.
$text = stripslashes( $text );
$text = preg_replace_callback(
'|<a (.+?)>|i',
static function ( $matches ) {
return wp_rel_callback( $matches, 'nofollow ugc' );
},
$text
);
return wp_slash( $text );
}
/**
* Adds `rel="noopener"` to all HTML A elements that have a target.
*
* @since 5.1.0
* @since 5.6.0 Removed 'noreferrer' relationship.
*
* @param string $text Content that may contain HTML A elements.
* @return string Converted content.
*/
function wp_targeted_link_rel( $text ) {
// Don't run (more expensive) regex if no links with targets.
if ( stripos( $text, 'target' ) === false || stripos( $text, '<a ' ) === false || is_serialized( $text ) ) {
return $text;
}
$script_and_style_regex = '/<(script|style).*?<\/\\1>/si';
preg_match_all( $script_and_style_regex, $text, $matches );
$extra_parts = $matches[0];
$html_parts = preg_split( $script_and_style_regex, $text );
foreach ( $html_parts as &$part ) {
$part = preg_replace_callback( '|<a\s([^>]*target\s*=[^>]*)>|i', 'wp_targeted_link_rel_callback', $part );
}
$text = '';
for ( $i = 0; $i < count( $html_parts ); $i++ ) {
$text .= $html_parts[ $i ];
if ( isset( $extra_parts[ $i ] ) ) {
$text .= $extra_parts[ $i ];
}
}
return $text;
}
/**
* Callback to add `rel="noopener"` string to HTML A element.
*
* Will not duplicate an existing 'noopener' value to avoid invalidating the HTML.
*
* @since 5.1.0
* @since 5.6.0 Removed 'noreferrer' relationship.
*
* @param array $matches Single match.
* @return string HTML A Element with `rel="noopener"` in addition to any existing values.
*/
function wp_targeted_link_rel_callback( $matches ) {
$link_html = $matches[1];
$original_link_html = $link_html;
// Consider the HTML escaped if there are no unescaped quotes.
$is_escaped = ! preg_match( '/(^|[^\\\\])[\'"]/', $link_html );
if ( $is_escaped ) {
// Replace only the quotes so that they are parsable by wp_kses_hair(), leave the rest as is.
$link_html = preg_replace( '/\\\\([\'"])/', '$1', $link_html );
}
$atts = wp_kses_hair( $link_html, wp_allowed_protocols() );
/**
* Filters the rel values that are added to links with `target` attribute.
*
* @since 5.1.0
*
* @param string $rel The rel values.
* @param string $link_html The matched content of the link tag including all HTML attributes.
*/
$rel = apply_filters( 'wp_targeted_link_rel', 'noopener', $link_html );
// Return early if no rel values to be added or if no actual target attribute.
if ( ! $rel || ! isset( $atts['target'] ) ) {
return "<a $original_link_html>";
}
if ( isset( $atts['rel'] ) ) {
$all_parts = preg_split( '/\s/', "{$atts['rel']['value']} $rel", -1, PREG_SPLIT_NO_EMPTY );
$rel = implode( ' ', array_unique( $all_parts ) );
}
$atts['rel']['whole'] = 'rel="' . esc_attr( $rel ) . '"';
$link_html = implode( ' ', array_column( $atts, 'whole' ) );
if ( $is_escaped ) {
$link_html = preg_replace( '/[\'"]/', '\\\\$0', $link_html );
}
return "<a $link_html>";
}
/**
* Adds all filters modifying the rel attribute of targeted links.
*
* @since 5.1.0
*/
function wp_init_targeted_link_rel_filters() {
$filters = array(
'title_save_pre',
'content_save_pre',
'excerpt_save_pre',
'content_filtered_save_pre',
'pre_comment_content',
'pre_term_description',
'pre_link_description',
'pre_link_notes',
'pre_user_description',
);
foreach ( $filters as $filter ) {
add_filter( $filter, 'wp_targeted_link_rel' );
}
}
/**
* Removes all filters modifying the rel attribute of targeted links.
*
* @since 5.1.0
*/
function wp_remove_targeted_link_rel_filters() {
$filters = array(
'title_save_pre',
'content_save_pre',
'excerpt_save_pre',
'content_filtered_save_pre',
'pre_comment_content',
'pre_term_description',
'pre_link_description',
'pre_link_notes',
'pre_user_description',
);
foreach ( $filters as $filter ) {
remove_filter( $filter, 'wp_targeted_link_rel' );
}
}
/**
* Converts one smiley code to the icon graphic file equivalent.
*
* Callback handler for convert_smilies().
*
* Looks up one smiley code in the $wpsmiliestrans global array and returns an
* `<img>` string for that smiley.
*
* @since 2.8.0
*
* @global array $wpsmiliestrans
*
* @param array $matches Single match. Smiley code to convert to image.
* @return string Image string for smiley.
*/
function translate_smiley( $matches ) {
global $wpsmiliestrans;
if ( count( $matches ) === 0 ) {
return '';
}
$smiley = trim( reset( $matches ) );
$img = $wpsmiliestrans[ $smiley ];
$matches = array();
$ext = preg_match( '/\.([^.]+)$/', $img, $matches ) ? strtolower( $matches[1] ) : false;
$image_exts = array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'webp', 'avif' );
// Don't convert smilies that aren't images - they're probably emoji.
if ( ! in_array( $ext, $image_exts, true ) ) {
return $img;
}
/**
* Filters the Smiley image URL before it's used in the image element.
*
* @since 2.9.0
*
* @param string $smiley_url URL for the smiley image.
* @param string $img Filename for the smiley image.
* @param string $site_url Site URL, as returned by site_url().
*/
$src_url = apply_filters( 'smilies_src', includes_url( "images/smilies/$img" ), $img, site_url() );
return sprintf( '<img src="%s" alt="%s" class="wp-smiley" style="height: 1em; max-height: 1em;" />', esc_url( $src_url ), esc_attr( $smiley ) );
}
/**
* Converts text equivalent of smilies to images.
*
* Will only convert smilies if the option 'use_smilies' is true and the global
* used in the function isn't empty.
*
* @since 0.71
*
* @global string|array $wp_smiliessearch
*
* @param string $text Content to convert smilies from text.
* @return string Converted content with text smilies replaced with images.
*/
function convert_smilies( $text ) {
global $wp_smiliessearch;
$output = '';
if ( get_option( 'use_smilies' ) && ! empty( $wp_smiliessearch ) ) {
// HTML loop taken from texturize function, could possible be consolidated.
$textarr = preg_split( '/(<.*>)/U', $text, -1, PREG_SPLIT_DELIM_CAPTURE ); // Capture the tags as well as in between.
$stop = count( $textarr ); // Loop stuff.
// Ignore processing of specific tags.
$tags_to_ignore = 'code|pre|style|script|textarea';
$ignore_block_element = '';
for ( $i = 0; $i < $stop; $i++ ) {
$content = $textarr[ $i ];
// If we're in an ignore block, wait until we find its closing tag.
if ( '' === $ignore_block_element && preg_match( '/^<(' . $tags_to_ignore . ')[^>]*>/', $content, $matches ) ) {
$ignore_block_element = $matches[1];
}
// If it's not a tag and not in ignore block.
if ( '' === $ignore_block_element && strlen( $content ) > 0 && '<' !== $content[0] ) {
$content = preg_replace_callback( $wp_smiliessearch, 'translate_smiley', $content );
}
// Did we exit ignore block?
if ( '' !== $ignore_block_element && '</' . $ignore_block_element . '>' === $content ) {
$ignore_block_element = '';
}
$output .= $content;
}
} else {
// Return default text.
$output = $text;
}
return $output;
}
/**
* Verifies that an email is valid.
*
* Does not grok i18n domains. Not RFC compliant.
*
* @since 0.71
*
* @param string $email Email address to verify.
* @param bool $deprecated Deprecated.
* @return string|false Valid email address on success, false on failure.
*/
function is_email( $email, $deprecated = false ) {
if ( ! empty( $deprecated ) ) {
_deprecated_argument( __FUNCTION__, '3.0.0' );
}
// Test for the minimum length the email can be.
if ( strlen( $email ) < 6 ) {
/**
* Filters whether an email address is valid.
*
* This filter is evaluated under several different contexts, such as 'email_too_short',
* 'email_no_at', 'local_invalid_chars', 'domain_period_sequence', 'domain_period_limits',
* 'domain_no_periods', 'sub_hyphen_limits', 'sub_invalid_chars', or no specific context.
*
* @since 2.8.0
*
* @param string|false $is_email The email address if successfully passed the is_email() checks, false otherwise.
* @param string $email The email address being checked.
* @param string $context Context under which the email was tested.
*/
return apply_filters( 'is_email', false, $email, 'email_too_short' );
}
// Test for an @ character after the first position.
if ( strpos( $email, '@', 1 ) === false ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'is_email', false, $email, 'email_no_at' );
}
// Split out the local and domain parts.
list( $local, $domain ) = explode( '@', $email, 2 );
/*
* LOCAL PART
* Test for invalid characters.
*/
if ( ! preg_match( '/^[a-zA-Z0-9!#$%&\'*+\/=?^_`{|}~\.-]+$/', $local ) ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'is_email', false, $email, 'local_invalid_chars' );
}
/*
* DOMAIN PART
* Test for sequences of periods.
*/
if ( preg_match( '/\.{2,}/', $domain ) ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'is_email', false, $email, 'domain_period_sequence' );
}
// Test for leading and trailing periods and whitespace.
if ( trim( $domain, " \t\n\r\0\x0B." ) !== $domain ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'is_email', false, $email, 'domain_period_limits' );
}
// Split the domain into subs.
$subs = explode( '.', $domain );
// Assume the domain will have at least two subs.
if ( 2 > count( $subs ) ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'is_email', false, $email, 'domain_no_periods' );
}
// Loop through each sub.
foreach ( $subs as $sub ) {
// Test for leading and trailing hyphens and whitespace.
if ( trim( $sub, " \t\n\r\0\x0B-" ) !== $sub ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'is_email', false, $email, 'sub_hyphen_limits' );
}
// Test for invalid characters.
if ( ! preg_match( '/^[a-z0-9-]+$/i', $sub ) ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'is_email', false, $email, 'sub_invalid_chars' );
}
}
// Congratulations, your email made it!
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'is_email', $email, $email, null );
}
/**
* Converts to ASCII from email subjects.
*
* @since 1.2.0
*
* @param string $subject Subject line.
* @return string Converted string to ASCII.
*/
function wp_iso_descrambler( $subject ) {
/* this may only work with iso-8859-1, I'm afraid */
if ( ! preg_match( '#\=\?(.+)\?Q\?(.+)\?\=#i', $subject, $matches ) ) {
return $subject;
}
$subject = str_replace( '_', ' ', $matches[2] );
return preg_replace_callback( '#\=([0-9a-f]{2})#i', '_wp_iso_convert', $subject );
}
/**
* Helper function to convert hex encoded chars to ASCII.
*
* @since 3.1.0
* @access private
*
* @param array $matches The preg_replace_callback matches array.
* @return string Converted chars.
*/
function _wp_iso_convert( $matches ) {
return chr( hexdec( strtolower( $matches[1] ) ) );
}
/**
* Given a date in the timezone of the site, returns that date in UTC.
*
* Requires and returns a date in the Y-m-d H:i:s format.
* Return format can be overridden using the $format parameter.
*
* @since 1.2.0
*
* @param string $date_string The date to be converted, in the timezone of the site.
* @param string $format The format string for the returned date. Default 'Y-m-d H:i:s'.
* @return string Formatted version of the date, in UTC.
*/
function get_gmt_from_date( $date_string, $format = 'Y-m-d H:i:s' ) {
$datetime = date_create( $date_string, wp_timezone() );
if ( false === $datetime ) {
return gmdate( $format, 0 );
}
return $datetime->setTimezone( new DateTimeZone( 'UTC' ) )->format( $format );
}
/**
* Given a date in UTC or GMT timezone, returns that date in the timezone of the site.
*
* Requires a date in the Y-m-d H:i:s format.
* Default return format of 'Y-m-d H:i:s' can be overridden using the `$format` parameter.
*
* @since 1.2.0
*
* @param string $date_string The date to be converted, in UTC or GMT timezone.
* @param string $format The format string for the returned date. Default 'Y-m-d H:i:s'.
* @return string Formatted version of the date, in the site's timezone.
*/
function get_date_from_gmt( $date_string, $format = 'Y-m-d H:i:s' ) {
$datetime = date_create( $date_string, new DateTimeZone( 'UTC' ) );
if ( false === $datetime ) {
return gmdate( $format, 0 );
}
return $datetime->setTimezone( wp_timezone() )->format( $format );
}
/**
* Given an ISO 8601 timezone, returns its UTC offset in seconds.
*
* @since 1.5.0
*
* @param string $timezone Either 'Z' for 0 offset or '±hhmm'.
* @return int|float The offset in seconds.
*/
function iso8601_timezone_to_offset( $timezone ) {
// $timezone is either 'Z' or '[+|-]hhmm'.
if ( 'Z' === $timezone ) {
$offset = 0;
} else {
$sign = ( str_starts_with( $timezone, '+' ) ) ? 1 : -1;
$hours = (int) substr( $timezone, 1, 2 );
$minutes = (int) substr( $timezone, 3, 4 ) / 60;
$offset = $sign * HOUR_IN_SECONDS * ( $hours + $minutes );
}
return $offset;
}
/**
* Given an ISO 8601 (Ymd\TH:i:sO) date, returns a MySQL DateTime (Y-m-d H:i:s) format used by post_date[_gmt].
*
* @since 1.5.0
*
* @param string $date_string Date and time in ISO 8601 format {@link https://en.wikipedia.org/wiki/ISO_8601}.
* @param string $timezone Optional. If set to 'gmt' returns the result in UTC. Default 'user'.
* @return string|false The date and time in MySQL DateTime format - Y-m-d H:i:s, or false on failure.
*/
function iso8601_to_datetime( $date_string, $timezone = 'user' ) {
$timezone = strtolower( $timezone );
$wp_timezone = wp_timezone();
$datetime = date_create( $date_string, $wp_timezone ); // Timezone is ignored if input has one.
if ( false === $datetime ) {
return false;
}
if ( 'gmt' === $timezone ) {
return $datetime->setTimezone( new DateTimeZone( 'UTC' ) )->format( 'Y-m-d H:i:s' );
}
if ( 'user' === $timezone ) {
return $datetime->setTimezone( $wp_timezone )->format( 'Y-m-d H:i:s' );
}
return false;
}
/**
* Strips out all characters that are not allowable in an email.
*
* @since 1.5.0
*
* @param string $email Email address to filter.
* @return string Filtered email address.
*/
function sanitize_email( $email ) {
// Test for the minimum length the email can be.
if ( strlen( $email ) < 6 ) {
/**
* Filters a sanitized email address.
*
* This filter is evaluated under several contexts, including 'email_too_short',
* 'email_no_at', 'local_invalid_chars', 'domain_period_sequence', 'domain_period_limits',
* 'domain_no_periods', 'domain_no_valid_subs', or no context.
*
* @since 2.8.0
*
* @param string $sanitized_email The sanitized email address.
* @param string $email The email address, as provided to sanitize_email().
* @param string|null $message A message to pass to the user. null if email is sanitized.
*/
return apply_filters( 'sanitize_email', '', $email, 'email_too_short' );
}
// Test for an @ character after the first position.
if ( strpos( $email, '@', 1 ) === false ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'sanitize_email', '', $email, 'email_no_at' );
}
// Split out the local and domain parts.
list( $local, $domain ) = explode( '@', $email, 2 );
/*
* LOCAL PART
* Test for invalid characters.
*/
$local = preg_replace( '/[^a-zA-Z0-9!#$%&\'*+\/=?^_`{|}~\.-]/', '', $local );
if ( '' === $local ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'sanitize_email', '', $email, 'local_invalid_chars' );
}
/*
* DOMAIN PART
* Test for sequences of periods.
*/
$domain = preg_replace( '/\.{2,}/', '', $domain );
if ( '' === $domain ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'sanitize_email', '', $email, 'domain_period_sequence' );
}
// Test for leading and trailing periods and whitespace.
$domain = trim( $domain, " \t\n\r\0\x0B." );
if ( '' === $domain ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'sanitize_email', '', $email, 'domain_period_limits' );
}
// Split the domain into subs.
$subs = explode( '.', $domain );
// Assume the domain will have at least two subs.
if ( 2 > count( $subs ) ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'sanitize_email', '', $email, 'domain_no_periods' );
}
// Create an array that will contain valid subs.
$new_subs = array();
// Loop through each sub.
foreach ( $subs as $sub ) {
// Test for leading and trailing hyphens.
$sub = trim( $sub, " \t\n\r\0\x0B-" );
// Test for invalid characters.
$sub = preg_replace( '/[^a-z0-9-]+/i', '', $sub );
// If there's anything left, add it to the valid subs.
if ( '' !== $sub ) {
$new_subs[] = $sub;
}
}
// If there aren't 2 or more valid subs.
if ( 2 > count( $new_subs ) ) {
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'sanitize_email', '', $email, 'domain_no_valid_subs' );
}
// Join valid subs into the new domain.
$domain = implode( '.', $new_subs );
// Put the email back together.
$sanitized_email = $local . '@' . $domain;
// Congratulations, your email made it!
/** This filter is documented in wp-includes/formatting.php */
return apply_filters( 'sanitize_email', $sanitized_email, $email, null );
}
/**
* Determines the difference between two timestamps.
*
* The difference is returned in a human-readable format such as "1 hour",
* "5 mins", "2 days".
*
* @since 1.5.0
* @since 5.3.0 Added support for showing a difference in seconds.
*
* @param int $from Unix timestamp from which the difference begins.
* @param int $to Optional. Unix timestamp to end the time difference. Default becomes time() if not set.
* @return string Human-readable time difference.
*/
function human_time_diff( $from, $to = 0 ) {
if ( empty( $to ) ) {
$to = time();
}
$diff = (int) abs( $to - $from );
if ( $diff < MINUTE_IN_SECONDS ) {
$secs = $diff;
if ( $secs <= 1 ) {
$secs = 1;
}
/* translators: Time difference between two dates, in seconds. %s: Number of seconds. */
$since = sprintf( _n( '%s second', '%s seconds', $secs ), $secs );
} elseif ( $diff < HOUR_IN_SECONDS && $diff >= MINUTE_IN_SECONDS ) {
$mins = round( $diff / MINUTE_IN_SECONDS );
if ( $mins <= 1 ) {
$mins = 1;
}
/* translators: Time difference between two dates, in minutes (min=minute). %s: Number of minutes. */
$since = sprintf( _n( '%s min', '%s mins', $mins ), $mins );
} elseif ( $diff < DAY_IN_SECONDS && $diff >= HOUR_IN_SECONDS ) {
$hours = round( $diff / HOUR_IN_SECONDS );
if ( $hours <= 1 ) {
$hours = 1;
}
/* translators: Time difference between two dates, in hours. %s: Number of hours. */
$since = sprintf( _n( '%s hour', '%s hours', $hours ), $hours );
} elseif ( $diff < WEEK_IN_SECONDS && $diff >= DAY_IN_SECONDS ) {
$days = round( $diff / DAY_IN_SECONDS );
if ( $days <= 1 ) {
$days = 1;
}
/* translators: Time difference between two dates, in days. %s: Number of days. */
$since = sprintf( _n( '%s day', '%s days', $days ), $days );
} elseif ( $diff < MONTH_IN_SECONDS && $diff >= WEEK_IN_SECONDS ) {
$weeks = round( $diff / WEEK_IN_SECONDS );
if ( $weeks <= 1 ) {
$weeks = 1;
}
/* translators: Time difference between two dates, in weeks. %s: Number of weeks. */
$since = sprintf( _n( '%s week', '%s weeks', $weeks ), $weeks );
} elseif ( $diff < YEAR_IN_SECONDS && $diff >= MONTH_IN_SECONDS ) {
$months = round( $diff / MONTH_IN_SECONDS );
if ( $months <= 1 ) {
$months = 1;
}
/* translators: Time difference between two dates, in months. %s: Number of months. */
$since = sprintf( _n( '%s month', '%s months', $months ), $months );
} elseif ( $diff >= YEAR_IN_SECONDS ) {
$years = round( $diff / YEAR_IN_SECONDS );
if ( $years <= 1 ) {
$years = 1;
}
/* translators: Time difference between two dates, in years. %s: Number of years. */
$since = sprintf( _n( '%s year', '%s years', $years ), $years );
}
/**
* Filters the human-readable difference between two timestamps.
*
* @since 4.0.0
*
* @param string $since The difference in human-readable text.
* @param int $diff The difference in seconds.
* @param int $from Unix timestamp from which the difference begins.
* @param int $to Unix timestamp to end the time difference.
*/
return apply_filters( 'human_time_diff', $since, $diff, $from, $to );
}
/**
* Generates an excerpt from the content, if needed.
*
* Returns a maximum of 55 words with an ellipsis appended if necessary.
*
* The 55-word limit can be modified by plugins/themes using the {@see 'excerpt_length'} filter
* The ' [&hellip;]' string can be modified by plugins/themes using the {@see 'excerpt_more'} filter
*
* @since 1.5.0
* @since 5.2.0 Added the `$post` parameter.
* @since 6.3.0 Removes footnotes markup from the excerpt content.
*
* @param string $text Optional. The excerpt. If set to empty, an excerpt is generated.
* @param WP_Post|object|int $post Optional. WP_Post instance or Post ID/object. Default null.
* @return string The excerpt.
*/
function wp_trim_excerpt( $text = '', $post = null ) {
$raw_excerpt = $text;
if ( '' === trim( $text ) ) {
$post = get_post( $post );
$text = get_the_content( '', false, $post );
$text = strip_shortcodes( $text );
$text = excerpt_remove_blocks( $text );
$text = excerpt_remove_footnotes( $text );
/*
* Temporarily unhook wp_filter_content_tags() since any tags
* within the excerpt are stripped out. Modifying the tags here
* is wasteful and can lead to bugs in the image counting logic.
*/
$filter_image_removed = remove_filter( 'the_content', 'wp_filter_content_tags', 12 );
/*
* Temporarily unhook do_blocks() since excerpt_remove_blocks( $text )
* handles block rendering needed for excerpt.
*/
$filter_block_removed = remove_filter( 'the_content', 'do_blocks', 9 );
/** This filter is documented in wp-includes/post-template.php */
$text = apply_filters( 'the_content', $text );
$text = str_replace( ']]>', ']]&gt;', $text );
// Restore the original filter if removed.
if ( $filter_block_removed ) {
add_filter( 'the_content', 'do_blocks', 9 );
}
/*
* Only restore the filter callback if it was removed above. The logic
* to unhook and restore only applies on the default priority of 10,
* which is generally used for the filter callback in WordPress core.
*/
if ( $filter_image_removed ) {
add_filter( 'the_content', 'wp_filter_content_tags', 12 );
}
/* translators: Maximum number of words used in a post excerpt. */
$excerpt_length = (int) _x( '55', 'excerpt_length' );
/**
* Filters the maximum number of words in a post excerpt.
*
* @since 2.7.0
*
* @param int $number The maximum number of words. Default 55.
*/
$excerpt_length = (int) apply_filters( 'excerpt_length', $excerpt_length );
/**
* Filters the string in the "more" link displayed after a trimmed excerpt.
*
* @since 2.9.0
*
* @param string $more_string The string shown within the more link.
*/
$excerpt_more = apply_filters( 'excerpt_more', ' ' . '[&hellip;]' );
$text = wp_trim_words( $text, $excerpt_length, $excerpt_more );
}
/**
* Filters the trimmed excerpt string.
*
* @since 2.8.0
*
* @param string $text The trimmed text.
* @param string $raw_excerpt The text prior to trimming.
*/
return apply_filters( 'wp_trim_excerpt', $text, $raw_excerpt );
}
/**
* Trims text to a certain number of words.
*
* This function is localized. For languages that count 'words' by the individual
* character (such as East Asian languages), the $num_words argument will apply
* to the number of individual characters.
*
* @since 3.3.0
*
* @param string $text Text to trim.
* @param int $num_words Number of words. Default 55.
* @param string $more Optional. What to append if $text needs to be trimmed. Default '&hellip;'.
* @return string Trimmed text.
*/
function wp_trim_words( $text, $num_words = 55, $more = null ) {
if ( null === $more ) {
$more = __( '&hellip;' );
}
$original_text = $text;
$text = wp_strip_all_tags( $text );
$num_words = (int) $num_words;
if ( str_starts_with( wp_get_word_count_type(), 'characters' ) && preg_match( '/^utf\-?8$/i', get_option( 'blog_charset' ) ) ) {
$text = trim( preg_replace( "/[\n\r\t ]+/", ' ', $text ), ' ' );
preg_match_all( '/./u', $text, $words_array );
$words_array = array_slice( $words_array[0], 0, $num_words + 1 );
$sep = '';
} else {
$words_array = preg_split( "/[\n\r\t ]+/", $text, $num_words + 1, PREG_SPLIT_NO_EMPTY );
$sep = ' ';
}
if ( count( $words_array ) > $num_words ) {
array_pop( $words_array );
$text = implode( $sep, $words_array );
$text = $text . $more;
} else {
$text = implode( $sep, $words_array );
}
/**
* Filters the text content after words have been trimmed.
*
* @since 3.3.0
*
* @param string $text The trimmed text.
* @param int $num_words The number of words to trim the text to. Default 55.
* @param string $more An optional string to append to the end of the trimmed text, e.g. &hellip;.
* @param string $original_text The text before it was trimmed.
*/
return apply_filters( 'wp_trim_words', $text, $num_words, $more, $original_text );
}
/**
* Converts named entities into numbered entities.
*
* @since 1.5.1
*
* @param string $text The text within which entities will be converted.
* @return string Text with converted entities.
*/
function ent2ncr( $text ) {
/**
* Filters text before named entities are converted into numbered entities.
*
* A non-null string must be returned for the filter to be evaluated.
*
* @since 3.3.0
*
* @param string|null $converted_text The text to be converted. Default null.
* @param string $text The text prior to entity conversion.
*/
$filtered = apply_filters( 'pre_ent2ncr', null, $text );
if ( null !== $filtered ) {
return $filtered;
}
$to_ncr = array(
'&quot;' => '&#34;',
'&amp;' => '&#38;',
'&lt;' => '&#60;',
'&gt;' => '&#62;',
'|' => '&#124;',
'&nbsp;' => '&#160;',
'&iexcl;' => '&#161;',
'&cent;' => '&#162;',
'&pound;' => '&#163;',
'&curren;' => '&#164;',
'&yen;' => '&#165;',
'&brvbar;' => '&#166;',
'&brkbar;' => '&#166;',
'&sect;' => '&#167;',
'&uml;' => '&#168;',
'&die;' => '&#168;',
'&copy;' => '&#169;',
'&ordf;' => '&#170;',
'&laquo;' => '&#171;',
'&not;' => '&#172;',
'&shy;' => '&#173;',
'&reg;' => '&#174;',
'&macr;' => '&#175;',
'&hibar;' => '&#175;',
'&deg;' => '&#176;',
'&plusmn;' => '&#177;',
'&sup2;' => '&#178;',
'&sup3;' => '&#179;',
'&acute;' => '&#180;',
'&micro;' => '&#181;',
'&para;' => '&#182;',
'&middot;' => '&#183;',
'&cedil;' => '&#184;',
'&sup1;' => '&#185;',
'&ordm;' => '&#186;',
'&raquo;' => '&#187;',
'&frac14;' => '&#188;',
'&frac12;' => '&#189;',
'&frac34;' => '&#190;',
'&iquest;' => '&#191;',
'&Agrave;' => '&#192;',
'&Aacute;' => '&#193;',
'&Acirc;' => '&#194;',
'&Atilde;' => '&#195;',
'&Auml;' => '&#196;',
'&Aring;' => '&#197;',
'&AElig;' => '&#198;',
'&Ccedil;' => '&#199;',
'&Egrave;' => '&#200;',
'&Eacute;' => '&#201;',
'&Ecirc;' => '&#202;',
'&Euml;' => '&#203;',
'&Igrave;' => '&#204;',
'&Iacute;' => '&#205;',
'&Icirc;' => '&#206;',
'&Iuml;' => '&#207;',
'&ETH;' => '&#208;',
'&Ntilde;' => '&#209;',
'&Ograve;' => '&#210;',
'&Oacute;' => '&#211;',
'&Ocirc;' => '&#212;',
'&Otilde;' => '&#213;',
'&Ouml;' => '&#214;',
'&times;' => '&#215;',
'&Oslash;' => '&#216;',
'&Ugrave;' => '&#217;',
'&Uacute;' => '&#218;',
'&Ucirc;' => '&#219;',
'&Uuml;' => '&#220;',
'&Yacute;' => '&#221;',
'&THORN;' => '&#222;',
'&szlig;' => '&#223;',
'&agrave;' => '&#224;',
'&aacute;' => '&#225;',
'&acirc;' => '&#226;',
'&atilde;' => '&#227;',
'&auml;' => '&#228;',
'&aring;' => '&#229;',
'&aelig;' => '&#230;',
'&ccedil;' => '&#231;',
'&egrave;' => '&#232;',
'&eacute;' => '&#233;',
'&ecirc;' => '&#234;',
'&euml;' => '&#235;',
'&igrave;' => '&#236;',
'&iacute;' => '&#237;',
'&icirc;' => '&#238;',
'&iuml;' => '&#239;',
'&eth;' => '&#240;',
'&ntilde;' => '&#241;',
'&ograve;' => '&#242;',
'&oacute;' => '&#243;',
'&ocirc;' => '&#244;',
'&otilde;' => '&#245;',
'&ouml;' => '&#246;',
'&divide;' => '&#247;',
'&oslash;' => '&#248;',
'&ugrave;' => '&#249;',
'&uacute;' => '&#250;',
'&ucirc;' => '&#251;',
'&uuml;' => '&#252;',
'&yacute;' => '&#253;',
'&thorn;' => '&#254;',
'&yuml;' => '&#255;',
'&OElig;' => '&#338;',
'&oelig;' => '&#339;',
'&Scaron;' => '&#352;',
'&scaron;' => '&#353;',
'&Yuml;' => '&#376;',
'&fnof;' => '&#402;',
'&circ;' => '&#710;',
'&tilde;' => '&#732;',
'&Alpha;' => '&#913;',
'&Beta;' => '&#914;',
'&Gamma;' => '&#915;',
'&Delta;' => '&#916;',
'&Epsilon;' => '&#917;',
'&Zeta;' => '&#918;',
'&Eta;' => '&#919;',
'&Theta;' => '&#920;',
'&Iota;' => '&#921;',
'&Kappa;' => '&#922;',
'&Lambda;' => '&#923;',
'&Mu;' => '&#924;',
'&Nu;' => '&#925;',
'&Xi;' => '&#926;',
'&Omicron;' => '&#927;',
'&Pi;' => '&#928;',
'&Rho;' => '&#929;',
'&Sigma;' => '&#931;',
'&Tau;' => '&#932;',
'&Upsilon;' => '&#933;',
'&Phi;' => '&#934;',
'&Chi;' => '&#935;',
'&Psi;' => '&#936;',
'&Omega;' => '&#937;',
'&alpha;' => '&#945;',
'&beta;' => '&#946;',
'&gamma;' => '&#947;',
'&delta;' => '&#948;',
'&epsilon;' => '&#949;',
'&zeta;' => '&#950;',
'&eta;' => '&#951;',
'&theta;' => '&#952;',
'&iota;' => '&#953;',
'&kappa;' => '&#954;',
'&lambda;' => '&#955;',
'&mu;' => '&#956;',
'&nu;' => '&#957;',
'&xi;' => '&#958;',
'&omicron;' => '&#959;',
'&pi;' => '&#960;',
'&rho;' => '&#961;',
'&sigmaf;' => '&#962;',
'&sigma;' => '&#963;',
'&tau;' => '&#964;',
'&upsilon;' => '&#965;',
'&phi;' => '&#966;',
'&chi;' => '&#967;',
'&psi;' => '&#968;',
'&omega;' => '&#969;',
'&thetasym;' => '&#977;',
'&upsih;' => '&#978;',
'&piv;' => '&#982;',
'&ensp;' => '&#8194;',
'&emsp;' => '&#8195;',
'&thinsp;' => '&#8201;',
'&zwnj;' => '&#8204;',
'&zwj;' => '&#8205;',
'&lrm;' => '&#8206;',
'&rlm;' => '&#8207;',
'&ndash;' => '&#8211;',
'&mdash;' => '&#8212;',
'&lsquo;' => '&#8216;',
'&rsquo;' => '&#8217;',
'&sbquo;' => '&#8218;',
'&ldquo;' => '&#8220;',
'&rdquo;' => '&#8221;',
'&bdquo;' => '&#8222;',
'&dagger;' => '&#8224;',
'&Dagger;' => '&#8225;',
'&bull;' => '&#8226;',
'&hellip;' => '&#8230;',
'&permil;' => '&#8240;',
'&prime;' => '&#8242;',
'&Prime;' => '&#8243;',
'&lsaquo;' => '&#8249;',
'&rsaquo;' => '&#8250;',
'&oline;' => '&#8254;',
'&frasl;' => '&#8260;',
'&euro;' => '&#8364;',
'&image;' => '&#8465;',
'&weierp;' => '&#8472;',
'&real;' => '&#8476;',
'&trade;' => '&#8482;',
'&alefsym;' => '&#8501;',
'&crarr;' => '&#8629;',
'&lArr;' => '&#8656;',
'&uArr;' => '&#8657;',
'&rArr;' => '&#8658;',
'&dArr;' => '&#8659;',
'&hArr;' => '&#8660;',
'&forall;' => '&#8704;',
'&part;' => '&#8706;',
'&exist;' => '&#8707;',
'&empty;' => '&#8709;',
'&nabla;' => '&#8711;',
'&isin;' => '&#8712;',
'&notin;' => '&#8713;',
'&ni;' => '&#8715;',
'&prod;' => '&#8719;',
'&sum;' => '&#8721;',
'&minus;' => '&#8722;',
'&lowast;' => '&#8727;',
'&radic;' => '&#8730;',
'&prop;' => '&#8733;',
'&infin;' => '&#8734;',
'&ang;' => '&#8736;',
'&and;' => '&#8743;',
'&or;' => '&#8744;',
'&cap;' => '&#8745;',
'&cup;' => '&#8746;',
'&int;' => '&#8747;',
'&there4;' => '&#8756;',
'&sim;' => '&#8764;',
'&cong;' => '&#8773;',
'&asymp;' => '&#8776;',
'&ne;' => '&#8800;',
'&equiv;' => '&#8801;',
'&le;' => '&#8804;',
'&ge;' => '&#8805;',
'&sub;' => '&#8834;',
'&sup;' => '&#8835;',
'&nsub;' => '&#8836;',
'&sube;' => '&#8838;',
'&supe;' => '&#8839;',
'&oplus;' => '&#8853;',
'&otimes;' => '&#8855;',
'&perp;' => '&#8869;',
'&sdot;' => '&#8901;',
'&lceil;' => '&#8968;',
'&rceil;' => '&#8969;',
'&lfloor;' => '&#8970;',
'&rfloor;' => '&#8971;',
'&lang;' => '&#9001;',
'&rang;' => '&#9002;',
'&larr;' => '&#8592;',
'&uarr;' => '&#8593;',
'&rarr;' => '&#8594;',
'&darr;' => '&#8595;',
'&harr;' => '&#8596;',
'&loz;' => '&#9674;',
'&spades;' => '&#9824;',
'&clubs;' => '&#9827;',
'&hearts;' => '&#9829;',
'&diams;' => '&#9830;',
);
return str_replace( array_keys( $to_ncr ), array_values( $to_ncr ), $text );
}
/**
* Formats text for the editor.
*
* Generally the browsers treat everything inside a textarea as text, but
* it is still a good idea to HTML entity encode `<`, `>` and `&` in the content.
*
* The filter {@see 'format_for_editor'} is applied here. If `$text` is empty the
* filter will be applied to an empty string.
*
* @since 4.3.0
*
* @see _WP_Editors::editor()
*
* @param string $text The text to be formatted.
* @param string $default_editor The default editor for the current user.
* It is usually either 'html' or 'tinymce'.
* @return string The formatted text after filter is applied.
*/
function format_for_editor( $text, $default_editor = null ) {
if ( $text ) {
$text = htmlspecialchars( $text, ENT_NOQUOTES, get_option( 'blog_charset' ) );
}
/**
* Filters the text after it is formatted for the editor.
*
* @since 4.3.0
*
* @param string $text The formatted text.
* @param string $default_editor The default editor for the current user.
* It is usually either 'html' or 'tinymce'.
*/
return apply_filters( 'format_for_editor', $text, $default_editor );
}
/**
* Performs a deep string replace operation to ensure the values in $search are no longer present.
*
* Repeats the replacement operation until it no longer replaces anything to remove "nested" values
* e.g. $subject = '%0%0%0DDD', $search ='%0D', $result ='' rather than the '%0%0DD' that
* str_replace would return
*
* @since 2.8.1
* @access private
*
* @param string|array $search The value being searched for, otherwise known as the needle.
* An array may be used to designate multiple needles.
* @param string $subject The string being searched and replaced on, otherwise known as the haystack.
* @return string The string with the replaced values.
*/
function _deep_replace( $search, $subject ) {
$subject = (string) $subject;
$count = 1;
while ( $count ) {
$subject = str_replace( $search, '', $subject, $count );
}
return $subject;
}
/**
* Escapes data for use in a MySQL query.
*
* Usually you should prepare queries using wpdb::prepare().
* Sometimes, spot-escaping is required or useful. One example
* is preparing an array for use in an IN clause.
*
* NOTE: Since 4.8.3, '%' characters will be replaced with a placeholder string,
* this prevents certain SQLi attacks from taking place. This change in behavior
* may cause issues for code that expects the return value of esc_sql() to be usable
* for other purposes.
*
* @since 2.8.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string|array $data Unescaped data.
* @return string|array Escaped data, in the same type as supplied.
*/
function esc_sql( $data ) {
global $wpdb;
return $wpdb->_escape( $data );
}
/**
* Checks and cleans a URL.
*
* A number of characters are removed from the URL. If the URL is for displaying
* (the default behavior) ampersands are also replaced. The {@see 'clean_url'} filter
* is applied to the returned cleaned URL.
*
* @since 2.8.0
*
* @param string $url The URL to be cleaned.
* @param string[] $protocols Optional. An array of acceptable protocols.
* Defaults to return value of wp_allowed_protocols().
* @param string $_context Private. Use sanitize_url() for database usage.
* @return string The cleaned URL after the {@see 'clean_url'} filter is applied.
* An empty string is returned if `$url` specifies a protocol other than
* those in `$protocols`, or if `$url` contains an empty string.
*/
function esc_url( $url, $protocols = null, $_context = 'display' ) {
$original_url = $url;
if ( '' === $url ) {
return $url;
}
$url = str_replace( ' ', '%20', ltrim( $url ) );
$url = preg_replace( '|[^a-z0-9-~+_.?#=!&;,/:%@$\|*\'()\[\]\\x80-\\xff]|i', '', $url );
if ( '' === $url ) {
return $url;
}
if ( 0 !== stripos( $url, 'mailto:' ) ) {
$strip = array( '%0d', '%0a', '%0D', '%0A' );
$url = _deep_replace( $strip, $url );
}
$url = str_replace( ';//', '://', $url );
/*
* If the URL doesn't appear to contain a scheme, we presume
* it needs http:// prepended (unless it's a relative link
* starting with /, # or ?, or a PHP file).
*/
if ( ! str_contains( $url, ':' ) && ! in_array( $url[0], array( '/', '#', '?' ), true ) &&
! preg_match( '/^[a-z0-9-]+?\.php/i', $url )
) {
$url = 'http://' . $url;
}
// Replace ampersands and single quotes only when displaying.
if ( 'display' === $_context ) {
$url = wp_kses_normalize_entities( $url );
$url = str_replace( '&amp;', '&#038;', $url );
$url = str_replace( "'", '&#039;', $url );
}
if ( str_contains( $url, '[' ) || str_contains( $url, ']' ) ) {
$parsed = wp_parse_url( $url );
$front = '';
if ( isset( $parsed['scheme'] ) ) {
$front .= $parsed['scheme'] . '://';
} elseif ( '/' === $url[0] ) {
$front .= '//';
}
if ( isset( $parsed['user'] ) ) {
$front .= $parsed['user'];
}
if ( isset( $parsed['pass'] ) ) {
$front .= ':' . $parsed['pass'];
}
if ( isset( $parsed['user'] ) || isset( $parsed['pass'] ) ) {
$front .= '@';
}
if ( isset( $parsed['host'] ) ) {
$front .= $parsed['host'];
}
if ( isset( $parsed['port'] ) ) {
$front .= ':' . $parsed['port'];
}
$end_dirty = str_replace( $front, '', $url );
$end_clean = str_replace( array( '[', ']' ), array( '%5B', '%5D' ), $end_dirty );
$url = str_replace( $end_dirty, $end_clean, $url );
}
if ( '/' === $url[0] ) {
$good_protocol_url = $url;
} else {
if ( ! is_array( $protocols ) ) {
$protocols = wp_allowed_protocols();
}
$good_protocol_url = wp_kses_bad_protocol( $url, $protocols );
if ( strtolower( $good_protocol_url ) !== strtolower( $url ) ) {
return '';
}
}
/**
* Filters a string cleaned and escaped for output as a URL.
*
* @since 2.3.0
*
* @param string $good_protocol_url The cleaned URL to be returned.
* @param string $original_url The URL prior to cleaning.
* @param string $_context If 'display', replace ampersands and single quotes only.
*/
return apply_filters( 'clean_url', $good_protocol_url, $original_url, $_context );
}
/**
* Sanitizes a URL for database or redirect usage.
*
* This function is an alias for sanitize_url().
*
* @since 2.8.0
* @since 6.1.0 Turned into an alias for sanitize_url().
*
* @see sanitize_url()
*
* @param string $url The URL to be cleaned.
* @param string[] $protocols Optional. An array of acceptable protocols.
* Defaults to return value of wp_allowed_protocols().
* @return string The cleaned URL after sanitize_url() is run.
*/
function esc_url_raw( $url, $protocols = null ) {
return sanitize_url( $url, $protocols );
}
/**
* Sanitizes a URL for database or redirect usage.
*
* @since 2.3.1
* @since 2.8.0 Deprecated in favor of esc_url_raw().
* @since 5.9.0 Restored (un-deprecated).
*
* @see esc_url()
*
* @param string $url The URL to be cleaned.
* @param string[] $protocols Optional. An array of acceptable protocols.
* Defaults to return value of wp_allowed_protocols().
* @return string The cleaned URL after esc_url() is run with the 'db' context.
*/
function sanitize_url( $url, $protocols = null ) {
return esc_url( $url, $protocols, 'db' );
}
/**
* Converts entities, while preserving already-encoded entities.
*
* @link https://www.php.net/htmlentities Borrowed from the PHP Manual user notes.
*
* @since 1.2.2
*
* @param string $text The text to be converted.
* @return string Converted text.
*/
function htmlentities2( $text ) {
$translation_table = get_html_translation_table( HTML_ENTITIES, ENT_QUOTES );
$translation_table[ chr( 38 ) ] = '&';
return preg_replace( '/&(?![A-Za-z]{0,4}\w{2,3};|#[0-9]{2,3};)/', '&amp;', strtr( $text, $translation_table ) );
}
/**
* Escapes single quotes, `"`, `<`, `>`, `&`, and fixes line endings.
*
* Escapes text strings for echoing in JS. It is intended to be used for inline JS
* (in a tag attribute, for example `onclick="..."`). Note that the strings have to
* be in single quotes. The {@see 'js_escape'} filter is also applied here.
*
* @since 2.8.0
*
* @param string $text The text to be escaped.
* @return string Escaped text.
*/
function esc_js( $text ) {
$safe_text = wp_check_invalid_utf8( $text );
$safe_text = _wp_specialchars( $safe_text, ENT_COMPAT );
$safe_text = preg_replace( '/&#(x)?0*(?(1)27|39);?/i', "'", stripslashes( $safe_text ) );
$safe_text = str_replace( "\r", '', $safe_text );
$safe_text = str_replace( "\n", '\\n', addslashes( $safe_text ) );
/**
* Filters a string cleaned and escaped for output in JavaScript.
*
* Text passed to esc_js() is stripped of invalid or special characters,
* and properly slashed for output.
*
* @since 2.0.6
*
* @param string $safe_text The text after it has been escaped.
* @param string $text The text prior to being escaped.
*/
return apply_filters( 'js_escape', $safe_text, $text );
}
/**
* Escaping for HTML blocks.
*
* @since 2.8.0
*
* @param string $text
* @return string
*/
function esc_html( $text ) {
$safe_text = wp_check_invalid_utf8( $text );
$safe_text = _wp_specialchars( $safe_text, ENT_QUOTES );
/**
* Filters a string cleaned and escaped for output in HTML.
*
* Text passed to esc_html() is stripped of invalid or special characters
* before output.
*
* @since 2.8.0
*
* @param string $safe_text The text after it has been escaped.
* @param string $text The text prior to being escaped.
*/
return apply_filters( 'esc_html', $safe_text, $text );
}
/**
* Escaping for HTML attributes.
*
* @since 2.8.0
*
* @param string $text
* @return string
*/
function esc_attr( $text ) {
$safe_text = wp_check_invalid_utf8( $text );
$safe_text = _wp_specialchars( $safe_text, ENT_QUOTES );
/**
* Filters a string cleaned and escaped for output in an HTML attribute.
*
* Text passed to esc_attr() is stripped of invalid or special characters
* before output.
*
* @since 2.0.6
*
* @param string $safe_text The text after it has been escaped.
* @param string $text The text prior to being escaped.
*/
return apply_filters( 'attribute_escape', $safe_text, $text );
}
/**
* Escaping for textarea values.
*
* @since 3.1.0
*
* @param string $text
* @return string
*/
function esc_textarea( $text ) {
$safe_text = htmlspecialchars( $text, ENT_QUOTES, get_option( 'blog_charset' ) );
/**
* Filters a string cleaned and escaped for output in a textarea element.
*
* @since 3.1.0
*
* @param string $safe_text The text after it has been escaped.
* @param string $text The text prior to being escaped.
*/
return apply_filters( 'esc_textarea', $safe_text, $text );
}
/**
* Escaping for XML blocks.
*
* @since 5.5.0
*
* @param string $text Text to escape.
* @return string Escaped text.
*/
function esc_xml( $text ) {
$safe_text = wp_check_invalid_utf8( $text );
$cdata_regex = '\<\!\[CDATA\[.*?\]\]\>';
$regex = <<<EOF
/
(?=.*?{$cdata_regex}) # lookahead that will match anything followed by a CDATA Section
(?<non_cdata_followed_by_cdata>(.*?)) # the "anything" matched by the lookahead
(?<cdata>({$cdata_regex})) # the CDATA Section matched by the lookahead
| # alternative
(?<non_cdata>(.*)) # non-CDATA Section
/sx
EOF;
$safe_text = (string) preg_replace_callback(
$regex,
static function ( $matches ) {
if ( ! isset( $matches[0] ) ) {
return '';
}
if ( isset( $matches['non_cdata'] ) ) {
// escape HTML entities in the non-CDATA Section.
return _wp_specialchars( $matches['non_cdata'], ENT_XML1 );
}
// Return the CDATA Section unchanged, escape HTML entities in the rest.
return _wp_specialchars( $matches['non_cdata_followed_by_cdata'], ENT_XML1 ) . $matches['cdata'];
},
$safe_text
);
/**
* Filters a string cleaned and escaped for output in XML.
*
* Text passed to esc_xml() is stripped of invalid or special characters
* before output. HTML named character references are converted to their
* equivalent code points.
*
* @since 5.5.0
*
* @param string $safe_text The text after it has been escaped.
* @param string $text The text prior to being escaped.
*/
return apply_filters( 'esc_xml', $safe_text, $text );
}
/**
* Escapes an HTML tag name.
*
* @since 2.5.0
*
* @param string $tag_name
* @return string
*/
function tag_escape( $tag_name ) {
$safe_tag = strtolower( preg_replace( '/[^a-zA-Z0-9_:]/', '', $tag_name ) );
/**
* Filters a string cleaned and escaped for output as an HTML tag.
*
* @since 2.8.0
*
* @param string $safe_tag The tag name after it has been escaped.
* @param string $tag_name The text before it was escaped.
*/
return apply_filters( 'tag_escape', $safe_tag, $tag_name );
}
/**
* Converts full URL paths to absolute paths.
*
* Removes the http or https protocols and the domain. Keeps the path '/' at the
* beginning, so it isn't a true relative link, but from the web root base.
*
* @since 2.1.0
* @since 4.1.0 Support was added for relative URLs.
*
* @param string $link Full URL path.
* @return string Absolute path.
*/
function wp_make_link_relative( $link ) {
return preg_replace( '|^(https?:)?//[^/]+(/?.*)|i', '$2', $link );
}
/**
* Sanitizes various option values based on the nature of the option.
*
* This is basically a switch statement which will pass $value through a number
* of functions depending on the $option.
*
* @since 2.0.5
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $option The name of the option.
* @param mixed $value The unsanitized value.
* @return mixed Sanitized value.
*/
function sanitize_option( $option, $value ) {
global $wpdb;
$original_value = $value;
$error = null;
switch ( $option ) {
case 'admin_email':
case 'new_admin_email':
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
if ( is_wp_error( $value ) ) {
$error = $value->get_error_message();
} else {
$value = sanitize_email( $value );
if ( ! is_email( $value ) ) {
$error = __( 'The email address entered did not appear to be a valid email address. Please enter a valid email address.' );
}
}
break;
case 'thumbnail_size_w':
case 'thumbnail_size_h':
case 'medium_size_w':
case 'medium_size_h':
case 'medium_large_size_w':
case 'medium_large_size_h':
case 'large_size_w':
case 'large_size_h':
case 'mailserver_port':
case 'comment_max_links':
case 'page_on_front':
case 'page_for_posts':
case 'rss_excerpt_length':
case 'default_category':
case 'default_email_category':
case 'default_link_category':
case 'close_comments_days_old':
case 'comments_per_page':
case 'thread_comments_depth':
case 'users_can_register':
case 'start_of_week':
case 'site_icon':
case 'fileupload_maxk':
$value = absint( $value );
break;
case 'posts_per_page':
case 'posts_per_rss':
$value = (int) $value;
if ( empty( $value ) ) {
$value = 1;
}
if ( $value < -1 ) {
$value = abs( $value );
}
break;
case 'default_ping_status':
case 'default_comment_status':
// Options that if not there have 0 value but need to be something like "closed".
if ( '0' === (string) $value || '' === $value ) {
$value = 'closed';
}
break;
case 'blogdescription':
case 'blogname':
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
if ( $value !== $original_value ) {
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', wp_encode_emoji( $original_value ) );
}
if ( is_wp_error( $value ) ) {
$error = $value->get_error_message();
} else {
$value = esc_html( $value );
}
break;
case 'blog_charset':
if ( is_string( $value ) ) {
$value = preg_replace( '/[^a-zA-Z0-9_-]/', '', $value ); // Strips slashes.
} else {
$value = '';
}
break;
case 'blog_public':
// This is the value if the settings checkbox is not checked on POST. Don't rely on this.
if ( null === $value ) {
$value = 1;
} else {
$value = (int) $value;
}
break;
case 'date_format':
case 'time_format':
case 'mailserver_url':
case 'mailserver_login':
case 'mailserver_pass':
case 'upload_path':
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
if ( is_wp_error( $value ) ) {
$error = $value->get_error_message();
} else {
$value = strip_tags( $value );
$value = wp_kses_data( $value );
}
break;
case 'ping_sites':
$value = explode( "\n", $value );
$value = array_filter( array_map( 'trim', $value ) );
$value = array_filter( array_map( 'sanitize_url', $value ) );
$value = implode( "\n", $value );
break;
case 'gmt_offset':
if ( is_numeric( $value ) ) {
$value = preg_replace( '/[^0-9:.-]/', '', $value ); // Strips slashes.
} else {
$value = '';
}
break;
case 'siteurl':
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
if ( is_wp_error( $value ) ) {
$error = $value->get_error_message();
} else {
if ( preg_match( '#http(s?)://(.+)#i', $value ) ) {
$value = sanitize_url( $value );
} else {
$error = __( 'The WordPress address you entered did not appear to be a valid URL. Please enter a valid URL.' );
}
}
break;
case 'home':
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
if ( is_wp_error( $value ) ) {
$error = $value->get_error_message();
} else {
if ( preg_match( '#http(s?)://(.+)#i', $value ) ) {
$value = sanitize_url( $value );
} else {
$error = __( 'The Site address you entered did not appear to be a valid URL. Please enter a valid URL.' );
}
}
break;
case 'WPLANG':
$allowed = get_available_languages();
if ( ! is_multisite() && defined( 'WPLANG' ) && '' !== WPLANG && 'en_US' !== WPLANG ) {
$allowed[] = WPLANG;
}
if ( ! in_array( $value, $allowed, true ) && ! empty( $value ) ) {
$value = get_option( $option );
}
break;
case 'illegal_names':
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
if ( is_wp_error( $value ) ) {
$error = $value->get_error_message();
} else {
if ( ! is_array( $value ) ) {
$value = explode( ' ', $value );
}
$value = array_values( array_filter( array_map( 'trim', $value ) ) );
if ( ! $value ) {
$value = '';
}
}
break;
case 'limited_email_domains':
case 'banned_email_domains':
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
if ( is_wp_error( $value ) ) {
$error = $value->get_error_message();
} else {
if ( ! is_array( $value ) ) {
$value = explode( "\n", $value );
}
$domains = array_values( array_filter( array_map( 'trim', $value ) ) );
$value = array();
foreach ( $domains as $domain ) {
if ( ! preg_match( '/(--|\.\.)/', $domain ) && preg_match( '|^([a-zA-Z0-9-\.])+$|', $domain ) ) {
$value[] = $domain;
}
}
if ( ! $value ) {
$value = '';
}
}
break;
case 'timezone_string':
$allowed_zones = timezone_identifiers_list( DateTimeZone::ALL_WITH_BC );
if ( ! in_array( $value, $allowed_zones, true ) && ! empty( $value ) ) {
$error = __( 'The timezone you have entered is not valid. Please select a valid timezone.' );
}
break;
case 'permalink_structure':
case 'category_base':
case 'tag_base':
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
if ( is_wp_error( $value ) ) {
$error = $value->get_error_message();
} else {
$value = sanitize_url( $value );
$value = str_replace( 'http://', '', $value );
}
if ( 'permalink_structure' === $option && null === $error
&& '' !== $value && ! preg_match( '/%[^\/%]+%/', $value )
) {
$error = sprintf(
/* translators: %s: Documentation URL. */
__( 'A structure tag is required when using custom permalinks. <a href="%s">Learn more</a>' ),
__( 'https://wordpress.org/documentation/article/customize-permalinks/#choosing-your-permalink-structure' )
);
}
break;
case 'default_role':
if ( ! get_role( $value ) && get_role( 'subscriber' ) ) {
$value = 'subscriber';
}
break;
case 'moderation_keys':
case 'disallowed_keys':
$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
if ( is_wp_error( $value ) ) {
$error = $value->get_error_message();
} else {
$value = explode( "\n", $value );
$value = array_filter( array_map( 'trim', $value ) );
$value = array_unique( $value );
$value = implode( "\n", $value );
}
break;
}
if ( null !== $error ) {
if ( '' === $error && is_wp_error( $value ) ) {
/* translators: 1: Option name, 2: Error code. */
$error = sprintf( __( 'Could not sanitize the %1$s option. Error code: %2$s' ), $option, $value->get_error_code() );
}
$value = get_option( $option );
if ( function_exists( 'add_settings_error' ) ) {
add_settings_error( $option, "invalid_{$option}", $error );
}
}
/**
* Filters an option value following sanitization.
*
* @since 2.3.0
* @since 4.3.0 Added the `$original_value` parameter.
*
* @param mixed $value The sanitized option value.
* @param string $option The option name.
* @param mixed $original_value The original value passed to the function.
*/
return apply_filters( "sanitize_option_{$option}", $value, $option, $original_value );
}
/**
* Maps a function to all non-iterable elements of an array or an object.
*
* This is similar to `array_walk_recursive()` but acts upon objects too.
*
* @since 4.4.0
*
* @param mixed $value The array, object, or scalar.
* @param callable $callback The function to map onto $value.
* @return mixed The value with the callback applied to all non-arrays and non-objects inside it.
*/
function map_deep( $value, $callback ) {
if ( is_array( $value ) ) {
foreach ( $value as $index => $item ) {
$value[ $index ] = map_deep( $item, $callback );
}
} elseif ( is_object( $value ) ) {
$object_vars = get_object_vars( $value );
foreach ( $object_vars as $property_name => $property_value ) {
$value->$property_name = map_deep( $property_value, $callback );
}
} else {
$value = call_user_func( $callback, $value );
}
return $value;
}
/**
* Parses a string into variables to be stored in an array.
*
* @since 2.2.1
*
* @param string $input_string The string to be parsed.
* @param array $result Variables will be stored in this array.
*/
function wp_parse_str( $input_string, &$result ) {
parse_str( (string) $input_string, $result );
/**
* Filters the array of variables derived from a parsed string.
*
* @since 2.2.1
*
* @param array $result The array populated with variables.
*/
$result = apply_filters( 'wp_parse_str', $result );
}
/**
* Converts lone less than signs.
*
* KSES already converts lone greater than signs.
*
* @since 2.3.0
*
* @param string $content Text to be converted.
* @return string Converted text.
*/
function wp_pre_kses_less_than( $content ) {
return preg_replace_callback( '%<[^>]*?((?=<)|>|$)%', 'wp_pre_kses_less_than_callback', $content );
}
/**
* Callback function used by preg_replace.
*
* @since 2.3.0
*
* @param string[] $matches Populated by matches to preg_replace.
* @return string The text returned after esc_html if needed.
*/
function wp_pre_kses_less_than_callback( $matches ) {
if ( ! str_contains( $matches[0], '>' ) ) {
return esc_html( $matches[0] );
}
return $matches[0];
}
/**
* Removes non-allowable HTML from parsed block attribute values when filtering
* in the post context.
*
* @since 5.3.1
*
* @param string $content Content to be run through KSES.
* @param array[]|string $allowed_html An array of allowed HTML elements
* and attributes, or a context name
* such as 'post'.
* @param string[] $allowed_protocols Array of allowed URL protocols.
* @return string Filtered text to run through KSES.
*/
function wp_pre_kses_block_attributes( $content, $allowed_html, $allowed_protocols ) {
/*
* `filter_block_content` is expected to call `wp_kses`. Temporarily remove
* the filter to avoid recursion.
*/
remove_filter( 'pre_kses', 'wp_pre_kses_block_attributes', 10 );
$content = filter_block_content( $content, $allowed_html, $allowed_protocols );
add_filter( 'pre_kses', 'wp_pre_kses_block_attributes', 10, 3 );
return $content;
}
/**
* WordPress' implementation of PHP sprintf() with filters.
*
* @since 2.5.0
* @since 5.3.0 Formalized the existing and already documented `...$args` parameter
* by adding it to the function signature.
*
* @link https://www.php.net/sprintf
*
* @param string $pattern The string which formatted args are inserted.
* @param mixed ...$args Arguments to be formatted into the $pattern string.
* @return string The formatted string.
*/
function wp_sprintf( $pattern, ...$args ) {
$len = strlen( $pattern );
$start = 0;
$result = '';
$arg_index = 0;
while ( $len > $start ) {
// Last character: append and break.
if ( strlen( $pattern ) - 1 === $start ) {
$result .= substr( $pattern, -1 );
break;
}
// Literal %: append and continue.
if ( '%%' === substr( $pattern, $start, 2 ) ) {
$start += 2;
$result .= '%';
continue;
}
// Get fragment before next %.
$end = strpos( $pattern, '%', $start + 1 );
if ( false === $end ) {
$end = $len;
}
$fragment = substr( $pattern, $start, $end - $start );
// Fragment has a specifier.
if ( '%' === $pattern[ $start ] ) {
// Find numbered arguments or take the next one in order.
if ( preg_match( '/^%(\d+)\$/', $fragment, $matches ) ) {
$index = $matches[1] - 1; // 0-based array vs 1-based sprintf() arguments.
$arg = isset( $args[ $index ] ) ? $args[ $index ] : '';
$fragment = str_replace( "%{$matches[1]}$", '%', $fragment );
} else {
$arg = isset( $args[ $arg_index ] ) ? $args[ $arg_index ] : '';
++$arg_index;
}
/**
* Filters a fragment from the pattern passed to wp_sprintf().
*
* If the fragment is unchanged, then sprintf() will be run on the fragment.
*
* @since 2.5.0
*
* @param string $fragment A fragment from the pattern.
* @param string $arg The argument.
*/
$_fragment = apply_filters( 'wp_sprintf', $fragment, $arg );
if ( $_fragment !== $fragment ) {
$fragment = $_fragment;
} else {
$fragment = sprintf( $fragment, (string) $arg );
}
}
// Append to result and move to next fragment.
$result .= $fragment;
$start = $end;
}
return $result;
}
/**
* Localizes list items before the rest of the content.
*
* The '%l' must be at the first characters can then contain the rest of the
* content. The list items will have ', ', ', and', and ' and ' added depending
* on the amount of list items in the $args parameter.
*
* @since 2.5.0
*
* @param string $pattern Content containing '%l' at the beginning.
* @param array $args List items to prepend to the content and replace '%l'.
* @return string Localized list items and rest of the content.
*/
function wp_sprintf_l( $pattern, $args ) {
// Not a match.
if ( ! str_starts_with( $pattern, '%l' ) ) {
return $pattern;
}
// Nothing to work with.
if ( empty( $args ) ) {
return '';
}
/**
* Filters the translated delimiters used by wp_sprintf_l().
* Placeholders (%s) are included to assist translators and then
* removed before the array of strings reaches the filter.
*
* Please note: Ampersands and entities should be avoided here.
*
* @since 2.5.0
*
* @param array $delimiters An array of translated delimiters.
*/
$l = apply_filters(
'wp_sprintf_l',
array(
/* translators: Used to join items in a list with more than 2 items. */
'between' => sprintf( __( '%1$s, %2$s' ), '', '' ),
/* translators: Used to join last two items in a list with more than 2 times. */
'between_last_two' => sprintf( __( '%1$s, and %2$s' ), '', '' ),
/* translators: Used to join items in a list with only 2 items. */
'between_only_two' => sprintf( __( '%1$s and %2$s' ), '', '' ),
)
);
$args = (array) $args;
$result = array_shift( $args );
if ( count( $args ) === 1 ) {
$result .= $l['between_only_two'] . array_shift( $args );
}
// Loop when more than two args.
$i = count( $args );
while ( $i ) {
$arg = array_shift( $args );
--$i;
if ( 0 === $i ) {
$result .= $l['between_last_two'] . $arg;
} else {
$result .= $l['between'] . $arg;
}
}
return $result . substr( $pattern, 2 );
}
/**
* Safely extracts not more than the first $count characters from HTML string.
*
* UTF-8, tags and entities safe prefix extraction. Entities inside will *NOT*
* be counted as one character. For example &amp; will be counted as 4, &lt; as
* 3, etc.
*
* @since 2.5.0
*
* @param string $str String to get the excerpt from.
* @param int $count Maximum number of characters to take.
* @param string $more Optional. What to append if $str needs to be trimmed. Defaults to empty string.
* @return string The excerpt.
*/
function wp_html_excerpt( $str, $count, $more = null ) {
if ( null === $more ) {
$more = '';
}
$str = wp_strip_all_tags( $str, true );
$excerpt = mb_substr( $str, 0, $count );
// Remove part of an entity at the end.
$excerpt = preg_replace( '/&[^;\s]{0,6}$/', '', $excerpt );
if ( $str !== $excerpt ) {
$excerpt = trim( $excerpt ) . $more;
}
return $excerpt;
}
/**
* Adds a base URL to relative links in passed content.
*
* By default, this function supports the 'src' and 'href' attributes.
* However, this can be modified via the `$attrs` parameter.
*
* @since 2.7.0
*
* @global string $_links_add_base
*
* @param string $content String to search for links in.
* @param string $base The base URL to prefix to links.
* @param array $attrs The attributes which should be processed.
* @return string The processed content.
*/
function links_add_base_url( $content, $base, $attrs = array( 'src', 'href' ) ) {
global $_links_add_base;
$_links_add_base = $base;
$attrs = implode( '|', (array) $attrs );
return preg_replace_callback( "!($attrs)=(['\"])(.+?)\\2!i", '_links_add_base', $content );
}
/**
* Callback to add a base URL to relative links in passed content.
*
* @since 2.7.0
* @access private
*
* @global string $_links_add_base
*
* @param string $m The matched link.
* @return string The processed link.
*/
function _links_add_base( $m ) {
global $_links_add_base;
// 1 = attribute name 2 = quotation mark 3 = URL.
return $m[1] . '=' . $m[2] .
( preg_match( '#^(\w{1,20}):#', $m[3], $protocol ) && in_array( $protocol[1], wp_allowed_protocols(), true ) ?
$m[3] :
WP_Http::make_absolute_url( $m[3], $_links_add_base )
)
. $m[2];
}
/**
* Adds a target attribute to all links in passed content.
*
* By default, this function only applies to `<a>` tags.
* However, this can be modified via the `$tags` parameter.
*
* *NOTE:* Any current target attribute will be stripped and replaced.
*
* @since 2.7.0
*
* @global string $_links_add_target
*
* @param string $content String to search for links in.
* @param string $target The target to add to the links.
* @param string[] $tags An array of tags to apply to.
* @return string The processed content.
*/
function links_add_target( $content, $target = '_blank', $tags = array( 'a' ) ) {
global $_links_add_target;
$_links_add_target = $target;
$tags = implode( '|', (array) $tags );
return preg_replace_callback( "!<($tags)((\s[^>]*)?)>!i", '_links_add_target', $content );
}
/**
* Callback to add a target attribute to all links in passed content.
*
* @since 2.7.0
* @access private
*
* @global string $_links_add_target
*
* @param string $m The matched link.
* @return string The processed link.
*/
function _links_add_target( $m ) {
global $_links_add_target;
$tag = $m[1];
$link = preg_replace( '|( target=([\'"])(.*?)\2)|i', '', $m[2] );
return '<' . $tag . $link . ' target="' . esc_attr( $_links_add_target ) . '">';
}
/**
* Normalizes EOL characters and strips duplicate whitespace.
*
* @since 2.7.0
*
* @param string $str The string to normalize.
* @return string The normalized string.
*/
function normalize_whitespace( $str ) {
$str = trim( $str );
$str = str_replace( "\r", "\n", $str );
$str = preg_replace( array( '/\n+/', '/[ \t]+/' ), array( "\n", ' ' ), $str );
return $str;
}
/**
* Properly strips all HTML tags including script and style
*
* This differs from strip_tags() because it removes the contents of
* the `<script>` and `<style>` tags. E.g. `strip_tags( '<script>something</script>' )`
* will return 'something'. wp_strip_all_tags will return ''
*
* @since 2.9.0
*
* @param string $text String containing HTML tags
* @param bool $remove_breaks Optional. Whether to remove left over line breaks and white space chars
* @return string The processed string.
*/
function wp_strip_all_tags( $text, $remove_breaks = false ) {
if ( is_null( $text ) ) {
return '';
}
if ( ! is_scalar( $text ) ) {
/*
* To maintain consistency with pre-PHP 8 error levels,
* trigger_error() is used to trigger an E_USER_WARNING,
* rather than _doing_it_wrong(), which triggers an E_USER_NOTICE.
*/
trigger_error(
sprintf(
/* translators: 1: The function name, 2: The argument number, 3: The argument name, 4: The expected type, 5: The provided type. */
__( 'Warning: %1$s expects parameter %2$s (%3$s) to be a %4$s, %5$s given.' ),
__FUNCTION__,
'#1',
'$text',
'string',
gettype( $text )
),
E_USER_WARNING
);
return '';
}
$text = preg_replace( '@<(script|style)[^>]*?>.*?</\\1>@si', '', $text );
$text = strip_tags( $text );
if ( $remove_breaks ) {
$text = preg_replace( '/[\r\n\t ]+/', ' ', $text );
}
return trim( $text );
}
/**
* Sanitizes a string from user input or from the database.
*
* - Checks for invalid UTF-8,
* - Converts single `<` characters to entities
* - Strips all tags
* - Removes line breaks, tabs, and extra whitespace
* - Strips percent-encoded characters
*
* @since 2.9.0
*
* @see sanitize_textarea_field()
* @see wp_check_invalid_utf8()
* @see wp_strip_all_tags()
*
* @param string $str String to sanitize.
* @return string Sanitized string.
*/
function sanitize_text_field( $str ) {
$filtered = _sanitize_text_fields( $str, false );
/**
* Filters a sanitized text field string.
*
* @since 2.9.0
*
* @param string $filtered The sanitized string.
* @param string $str The string prior to being sanitized.
*/
return apply_filters( 'sanitize_text_field', $filtered, $str );
}
/**
* Sanitizes a multiline string from user input or from the database.
*
* The function is like sanitize_text_field(), but preserves
* new lines (\n) and other whitespace, which are legitimate
* input in textarea elements.
*
* @see sanitize_text_field()
*
* @since 4.7.0
*
* @param string $str String to sanitize.
* @return string Sanitized string.
*/
function sanitize_textarea_field( $str ) {
$filtered = _sanitize_text_fields( $str, true );
/**
* Filters a sanitized textarea field string.
*
* @since 4.7.0
*
* @param string $filtered The sanitized string.
* @param string $str The string prior to being sanitized.
*/
return apply_filters( 'sanitize_textarea_field', $filtered, $str );
}
/**
* Internal helper function to sanitize a string from user input or from the database.
*
* @since 4.7.0
* @access private
*
* @param string $str String to sanitize.
* @param bool $keep_newlines Optional. Whether to keep newlines. Default: false.
* @return string Sanitized string.
*/
function _sanitize_text_fields( $str, $keep_newlines = false ) {
if ( is_object( $str ) || is_array( $str ) ) {
return '';
}
$str = (string) $str;
$filtered = wp_check_invalid_utf8( $str );
if ( str_contains( $filtered, '<' ) ) {
$filtered = wp_pre_kses_less_than( $filtered );
// This will strip extra whitespace for us.
$filtered = wp_strip_all_tags( $filtered, false );
/*
* Use HTML entities in a special case to make sure that
* later newline stripping stages cannot lead to a functional tag.
*/
$filtered = str_replace( "<\n", "&lt;\n", $filtered );
}
if ( ! $keep_newlines ) {
$filtered = preg_replace( '/[\r\n\t ]+/', ' ', $filtered );
}
$filtered = trim( $filtered );
// Remove percent-encoded characters.
$found = false;
while ( preg_match( '/%[a-f0-9]{2}/i', $filtered, $match ) ) {
$filtered = str_replace( $match[0], '', $filtered );
$found = true;
}
if ( $found ) {
// Strip out the whitespace that may now exist after removing percent-encoded characters.
$filtered = trim( preg_replace( '/ +/', ' ', $filtered ) );
}
return $filtered;
}
/**
* i18n-friendly version of basename().
*
* @since 3.1.0
*
* @param string $path A path.
* @param string $suffix If the filename ends in suffix this will also be cut off.
* @return string
*/
function wp_basename( $path, $suffix = '' ) {
return urldecode( basename( str_replace( array( '%2F', '%5C' ), '/', urlencode( $path ) ), $suffix ) );
}
// phpcs:disable WordPress.WP.CapitalPDangit.MisspelledInComment,WordPress.WP.CapitalPDangit.MisspelledInText,WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid -- 8-)
/**
* Forever eliminate "Wordpress" from the planet (or at least the little bit we can influence).
*
* Violating our coding standards for a good function name.
*
* @since 3.0.0
*
* @param string $text The text to be modified.
* @return string The modified text.
*/
function capital_P_dangit( $text ) {
// Simple replacement for titles.
$current_filter = current_filter();
if ( 'the_title' === $current_filter || 'wp_title' === $current_filter ) {
return str_replace( 'Wordpress', 'WordPress', $text );
}
// Still here? Use the more judicious replacement.
static $dblq = false;
if ( false === $dblq ) {
$dblq = _x( '&#8220;', 'opening curly double quote' );
}
return str_replace(
array( ' Wordpress', '&#8216;Wordpress', $dblq . 'Wordpress', '>Wordpress', '(Wordpress' ),
array( ' WordPress', '&#8216;WordPress', $dblq . 'WordPress', '>WordPress', '(WordPress' ),
$text
);
}
// phpcs:enable
/**
* Sanitizes a mime type
*
* @since 3.1.3
*
* @param string $mime_type Mime type.
* @return string Sanitized mime type.
*/
function sanitize_mime_type( $mime_type ) {
$sani_mime_type = preg_replace( '/[^-+*.a-zA-Z0-9\/]/', '', $mime_type );
/**
* Filters a mime type following sanitization.
*
* @since 3.1.3
*
* @param string $sani_mime_type The sanitized mime type.
* @param string $mime_type The mime type prior to sanitization.
*/
return apply_filters( 'sanitize_mime_type', $sani_mime_type, $mime_type );
}
/**
* Sanitizes space or carriage return separated URLs that are used to send trackbacks.
*
* @since 3.4.0
*
* @param string $to_ping Space or carriage return separated URLs
* @return string URLs starting with the http or https protocol, separated by a carriage return.
*/
function sanitize_trackback_urls( $to_ping ) {
$urls_to_ping = preg_split( '/[\r\n\t ]/', trim( $to_ping ), -1, PREG_SPLIT_NO_EMPTY );
foreach ( $urls_to_ping as $k => $url ) {
if ( ! preg_match( '#^https?://.#i', $url ) ) {
unset( $urls_to_ping[ $k ] );
}
}
$urls_to_ping = array_map( 'sanitize_url', $urls_to_ping );
$urls_to_ping = implode( "\n", $urls_to_ping );
/**
* Filters a list of trackback URLs following sanitization.
*
* The string returned here consists of a space or carriage return-delimited list
* of trackback URLs.
*
* @since 3.4.0
*
* @param string $urls_to_ping Sanitized space or carriage return separated URLs.
* @param string $to_ping Space or carriage return separated URLs before sanitization.
*/
return apply_filters( 'sanitize_trackback_urls', $urls_to_ping, $to_ping );
}
/**
* Adds slashes to a string or recursively adds slashes to strings within an array.
*
* This should be used when preparing data for core API that expects slashed data.
* This should not be used to escape data going directly into an SQL query.
*
* @since 3.6.0
* @since 5.5.0 Non-string values are left untouched.
*
* @param string|array $value String or array of data to slash.
* @return string|array Slashed `$value`, in the same type as supplied.
*/
function wp_slash( $value ) {
if ( is_array( $value ) ) {
$value = array_map( 'wp_slash', $value );
}
if ( is_string( $value ) ) {
return addslashes( $value );
}
return $value;
}
/**
* Removes slashes from a string or recursively removes slashes from strings within an array.
*
* This should be used to remove slashes from data passed to core API that
* expects data to be unslashed.
*
* @since 3.6.0
*
* @param string|array $value String or array of data to unslash.
* @return string|array Unslashed `$value`, in the same type as supplied.
*/
function wp_unslash( $value ) {
return stripslashes_deep( $value );
}
/**
* Extracts and returns the first URL from passed content.
*
* @since 3.6.0
*
* @param string $content A string which might contain a URL.
* @return string|false The found URL.
*/
function get_url_in_content( $content ) {
if ( empty( $content ) ) {
return false;
}
if ( preg_match( '/<a\s[^>]*?href=([\'"])(.+?)\1/is', $content, $matches ) ) {
return sanitize_url( $matches[2] );
}
return false;
}
/**
* Returns the regexp for common whitespace characters.
*
* By default, spaces include new lines, tabs, nbsp entities, and the UTF-8 nbsp.
* This is designed to replace the PCRE \s sequence. In ticket #22692, that
* sequence was found to be unreliable due to random inclusion of the A0 byte.
*
* @since 4.0.0
*
* @return string The spaces regexp.
*/
function wp_spaces_regexp() {
static $spaces = '';
if ( empty( $spaces ) ) {
/**
* Filters the regexp for common whitespace characters.
*
* This string is substituted for the \s sequence as needed in regular
* expressions. For websites not written in English, different characters
* may represent whitespace. For websites not encoded in UTF-8, the 0xC2 0xA0
* sequence may not be in use.
*
* @since 4.0.0
*
* @param string $spaces Regexp pattern for matching common whitespace characters.
*/
$spaces = apply_filters( 'wp_spaces_regexp', '[\r\n\t ]|\xC2\xA0|&nbsp;' );
}
return $spaces;
}
/**
* Enqueues the important emoji-related styles.
*
* @since 6.4.0
*/
function wp_enqueue_emoji_styles() {
// Back-compat for plugins that disable functionality by unhooking this action.
$action = is_admin() ? 'admin_print_styles' : 'wp_print_styles';
if ( ! has_action( $action, 'print_emoji_styles' ) ) {
return;
}
remove_action( $action, 'print_emoji_styles' );
$emoji_styles = '
img.wp-smiley, img.emoji {
display: inline !important;
border: none !important;
box-shadow: none !important;
height: 1em !important;
width: 1em !important;
margin: 0 0.07em !important;
vertical-align: -0.1em !important;
background: none !important;
padding: 0 !important;
}';
$handle = 'wp-emoji-styles';
wp_register_style( $handle, false );
wp_add_inline_style( $handle, $emoji_styles );
wp_enqueue_style( $handle );
}
/**
* Prints the inline Emoji detection script if it is not already printed.
*
* @since 4.2.0
*/
function print_emoji_detection_script() {
static $printed = false;
if ( $printed ) {
return;
}
$printed = true;
_print_emoji_detection_script();
}
/**
* Prints inline Emoji detection script.
*
* @ignore
* @since 4.6.0
* @access private
*/
function _print_emoji_detection_script() {
$settings = array(
/**
* Filters the URL where emoji png images are hosted.
*
* @since 4.2.0
*
* @param string $url The emoji base URL for png images.
*/
'baseUrl' => apply_filters( 'emoji_url', 'https://s.w.org/images/core/emoji/15.0.3/72x72/' ),
/**
* Filters the extension of the emoji png files.
*
* @since 4.2.0
*
* @param string $extension The emoji extension for png files. Default .png.
*/
'ext' => apply_filters( 'emoji_ext', '.png' ),
/**
* Filters the URL where emoji SVG images are hosted.
*
* @since 4.6.0
*
* @param string $url The emoji base URL for svg images.
*/
'svgUrl' => apply_filters( 'emoji_svg_url', 'https://s.w.org/images/core/emoji/15.0.3/svg/' ),
/**
* Filters the extension of the emoji SVG files.
*
* @since 4.6.0
*
* @param string $extension The emoji extension for svg files. Default .svg.
*/
'svgExt' => apply_filters( 'emoji_svg_ext', '.svg' ),
);
$version = 'ver=' . get_bloginfo( 'version' );
if ( SCRIPT_DEBUG ) {
$settings['source'] = array(
/** This filter is documented in wp-includes/class-wp-scripts.php */
'wpemoji' => apply_filters( 'script_loader_src', includes_url( "js/wp-emoji.js?$version" ), 'wpemoji' ),
/** This filter is documented in wp-includes/class-wp-scripts.php */
'twemoji' => apply_filters( 'script_loader_src', includes_url( "js/twemoji.js?$version" ), 'twemoji' ),
);
} else {
$settings['source'] = array(
/** This filter is documented in wp-includes/class-wp-scripts.php */
'concatemoji' => apply_filters( 'script_loader_src', includes_url( "js/wp-emoji-release.min.js?$version" ), 'concatemoji' ),
);
}
wp_print_inline_script_tag(
sprintf( 'window._wpemojiSettings = %s;', wp_json_encode( $settings ) ) . "\n" .
file_get_contents( ABSPATH . WPINC . '/js/wp-emoji-loader' . wp_scripts_get_suffix() . '.js' )
);
}
/**
* Converts emoji characters to their equivalent HTML entity.
*
* This allows us to store emoji in a DB using the utf8 character set.
*
* @since 4.2.0
*
* @param string $content The content to encode.
* @return string The encoded content.
*/
function wp_encode_emoji( $content ) {
$emoji = _wp_emoji_list( 'partials' );
foreach ( $emoji as $emojum ) {
$emoji_char = html_entity_decode( $emojum );
if ( str_contains( $content, $emoji_char ) ) {
$content = preg_replace( "/$emoji_char/", $emojum, $content );
}
}
return $content;
}
/**
* Converts emoji to a static img element.
*
* @since 4.2.0
*
* @param string $text The content to encode.
* @return string The encoded content.
*/
function wp_staticize_emoji( $text ) {
if ( ! str_contains( $text, '&#x' ) ) {
if ( ( function_exists( 'mb_check_encoding' ) && mb_check_encoding( $text, 'ASCII' ) ) || ! preg_match( '/[^\x00-\x7F]/', $text ) ) {
// The text doesn't contain anything that might be emoji, so we can return early.
return $text;
} else {
$encoded_text = wp_encode_emoji( $text );
if ( $encoded_text === $text ) {
return $encoded_text;
}
$text = $encoded_text;
}
}
$emoji = _wp_emoji_list( 'entities' );
// Quickly narrow down the list of emoji that might be in the text and need replacing.
$possible_emoji = array();
foreach ( $emoji as $emojum ) {
if ( str_contains( $text, $emojum ) ) {
$possible_emoji[ $emojum ] = html_entity_decode( $emojum );
}
}
if ( ! $possible_emoji ) {
return $text;
}
/** This filter is documented in wp-includes/formatting.php */
$cdn_url = apply_filters( 'emoji_url', 'https://s.w.org/images/core/emoji/15.0.3/72x72/' );
/** This filter is documented in wp-includes/formatting.php */
$ext = apply_filters( 'emoji_ext', '.png' );
$output = '';
/*
* HTML loop taken from smiley function, which was taken from texturize function.
* It'll never be consolidated.
*
* First, capture the tags as well as in between.
*/
$textarr = preg_split( '/(<.*>)/U', $text, -1, PREG_SPLIT_DELIM_CAPTURE );
$stop = count( $textarr );
// Ignore processing of specific tags.
$tags_to_ignore = 'code|pre|style|script|textarea';
$ignore_block_element = '';
for ( $i = 0; $i < $stop; $i++ ) {
$content = $textarr[ $i ];
// If we're in an ignore block, wait until we find its closing tag.
if ( '' === $ignore_block_element && preg_match( '/^<(' . $tags_to_ignore . ')>/', $content, $matches ) ) {
$ignore_block_element = $matches[1];
}
// If it's not a tag and not in ignore block.
if ( '' === $ignore_block_element && strlen( $content ) > 0 && '<' !== $content[0] && str_contains( $content, '&#x' ) ) {
foreach ( $possible_emoji as $emojum => $emoji_char ) {
if ( ! str_contains( $content, $emojum ) ) {
continue;
}
$file = str_replace( ';&#x', '-', $emojum );
$file = str_replace( array( '&#x', ';' ), '', $file );
$entity = sprintf( '<img src="%s" alt="%s" class="wp-smiley" style="height: 1em; max-height: 1em;" />', $cdn_url . $file . $ext, $emoji_char );
$content = str_replace( $emojum, $entity, $content );
}
}
// Did we exit ignore block?
if ( '' !== $ignore_block_element && '</' . $ignore_block_element . '>' === $content ) {
$ignore_block_element = '';
}
$output .= $content;
}
// Finally, remove any stray U+FE0F characters.
$output = str_replace( '&#xfe0f;', '', $output );
return $output;
}
/**
* Converts emoji in emails into static images.
*
* @since 4.2.0
*
* @param array $mail The email data array.
* @return array The email data array, with emoji in the message staticized.
*/
function wp_staticize_emoji_for_email( $mail ) {
if ( ! isset( $mail['message'] ) ) {
return $mail;
}
/*
* We can only transform the emoji into images if it's a `text/html` email.
* To do that, here's a cut down version of the same process that happens
* in wp_mail() - get the `Content-Type` from the headers, if there is one,
* then pass it through the {@see 'wp_mail_content_type'} filter, in case
* a plugin is handling changing the `Content-Type`.
*/
$headers = array();
if ( isset( $mail['headers'] ) ) {
if ( is_array( $mail['headers'] ) ) {
$headers = $mail['headers'];
} else {
$headers = explode( "\n", str_replace( "\r\n", "\n", $mail['headers'] ) );
}
}
foreach ( $headers as $header ) {
if ( ! str_contains( $header, ':' ) ) {
continue;
}
// Explode them out.
list( $name, $content ) = explode( ':', trim( $header ), 2 );
// Cleanup crew.
$name = trim( $name );
$content = trim( $content );
if ( 'content-type' === strtolower( $name ) ) {
if ( str_contains( $content, ';' ) ) {
list( $type, $charset ) = explode( ';', $content );
$content_type = trim( $type );
} else {
$content_type = trim( $content );
}
break;
}
}
// Set Content-Type if we don't have a content-type from the input headers.
if ( ! isset( $content_type ) ) {
$content_type = 'text/plain';
}
/** This filter is documented in wp-includes/pluggable.php */
$content_type = apply_filters( 'wp_mail_content_type', $content_type );
if ( 'text/html' === $content_type ) {
$mail['message'] = wp_staticize_emoji( $mail['message'] );
}
return $mail;
}
/**
* Returns arrays of emoji data.
*
* These arrays are automatically built from the regex in twemoji.js - if they need to be updated,
* you should update the regex there, then run the `npm run grunt precommit:emoji` job.
*
* @since 4.9.0
* @access private
*
* @param string $type Optional. Which array type to return. Accepts 'partials' or 'entities', default 'entities'.
* @return array An array to match all emoji that WordPress recognises.
*/
function _wp_emoji_list( $type = 'entities' ) {
// Do not remove the START/END comments - they're used to find where to insert the arrays.
// START: emoji arrays
$entities = array( '&#x1f468;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fb;', '&#x1f468;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fc;', '&#x1f468;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fd;', '&#x1f468;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fe;', '&#x1f468;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3ff;', '&#x1f468;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fb;', '&#x1f468;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fc;', '&#x1f468;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fd;', '&#x1f468;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fe;', '&#x1f468;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3ff;', '&#x1f468;&#x1f3fd;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fb;', '&#x1f468;&#x1f3fd;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fc;', '&#x1f468;&#x1f3fd;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fd;', '&#x1f468;&#x1f3fd;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fe;', '&#x1f468;&#x1f3fd;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3ff;', '&#x1f468;&#x1f3fe;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fb;', '&#x1f468;&#x1f3fe;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fc;', '&#x1f468;&#x1f3fe;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fd;', '&#x1f468;&#x1f3fe;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fe;', '&#x1f468;&#x1f3fe;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3ff;', '&#x1f468;&#x1f3ff;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fb;', '&#x1f468;&#x1f3ff;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fc;', '&#x1f468;&#x1f3ff;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fd;', '&#x1f468;&#x1f3ff;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fe;', '&#x1f468;&#x1f3ff;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3ff;', '&#x1f469;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fb;', '&#x1f469;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fc;', '&#x1f469;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fd;', '&#x1f469;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fe;', '&#x1f469;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3ff;', '&#x1f469;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f469;&#x1f3fb;', '&#x1f469;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f469;&#x1f3fc;', '&#x1f469;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f469;&#x1f3fd;', '&#x1f469;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f469;&#x1f3fe;', '&#x1f469;&#x1f3fb;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f469;&#x1f3ff;', '&#x1f469;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fb;', '&#x1f469;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fc;', '&#x1f469;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fd;', '&#x1f469;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3fe;', '&#x1f469;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f468;&#x1f3ff;', '&#x1f469;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f469;&#x1f3fb;', '&#x1f469;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f469;&#x1f3fc;', '&#x1f469;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f469;&#x1f3fd;', '&#x1f469;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f469;&#x1f3fe;', '&#x1f469;&#x1f3fc;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#x1f469;&#x1f3ff;', '&#x1f469;&#x1f3fd;&#x200d;&#x2764;&#xfe0f;&#x200d;&#x1f48b;&#x200d;&#
$partials = array( '&#x1f004;', '&#x1f0cf;', '&#x1f170;', '&#x1f171;', '&#x1f17e;', '&#x1f17f;', '&#x1f18e;', '&#x1f191;', '&#x1f192;', '&#x1f193;', '&#x1f194;', '&#x1f195;', '&#x1f196;', '&#x1f197;', '&#x1f198;', '&#x1f199;', '&#x1f19a;', '&#x1f1e6;', '&#x1f1e8;', '&#x1f1e9;', '&#x1f1ea;', '&#x1f1eb;', '&#x1f1ec;', '&#x1f1ee;', '&#x1f1f1;', '&#x1f1f2;', '&#x1f1f4;', '&#x1f1f6;', '&#x1f1f7;', '&#x1f1f8;', '&#x1f1f9;', '&#x1f1fa;', '&#x1f1fc;', '&#x1f1fd;', '&#x1f1ff;', '&#x1f1e7;', '&#x1f1ed;', '&#x1f1ef;', '&#x1f1f3;', '&#x1f1fb;', '&#x1f1fe;', '&#x1f1f0;', '&#x1f1f5;', '&#x1f201;', '&#x1f202;', '&#x1f21a;', '&#x1f22f;', '&#x1f232;', '&#x1f233;', '&#x1f234;', '&#x1f235;', '&#x1f236;', '&#x1f237;', '&#x1f238;', '&#x1f239;', '&#x1f23a;', '&#x1f250;', '&#x1f251;', '&#x1f300;', '&#x1f301;', '&#x1f302;', '&#x1f303;', '&#x1f304;', '&#x1f305;', '&#x1f306;', '&#x1f307;', '&#x1f308;', '&#x1f309;', '&#x1f30a;', '&#x1f30b;', '&#x1f30c;', '&#x1f30d;', '&#x1f30e;', '&#x1f30f;', '&#x1f310;', '&#x1f311;', '&#x1f312;', '&#x1f313;', '&#x1f314;', '&#x1f315;', '&#x1f316;', '&#x1f317;', '&#x1f318;', '&#x1f319;', '&#x1f31a;', '&#x1f31b;', '&#x1f31c;', '&#x1f31d;', '&#x1f31e;', '&#x1f31f;', '&#x1f320;', '&#x1f321;', '&#x1f324;', '&#x1f325;', '&#x1f326;', '&#x1f327;', '&#x1f328;', '&#x1f329;', '&#x1f32a;', '&#x1f32b;', '&#x1f32c;', '&#x1f32d;', '&#x1f32e;', '&#x1f32f;', '&#x1f330;', '&#x1f331;', '&#x1f332;', '&#x1f333;', '&#x1f334;', '&#x1f335;', '&#x1f336;', '&#x1f337;', '&#x1f338;', '&#x1f339;', '&#x1f33a;', '&#x1f33b;', '&#x1f33c;', '&#x1f33d;', '&#x1f33e;', '&#x1f33f;', '&#x1f340;', '&#x1f341;', '&#x1f342;', '&#x1f343;', '&#x1f344;', '&#x1f345;', '&#x1f346;', '&#x1f347;', '&#x1f348;', '&#x1f349;', '&#x1f34a;', '&#x1f34b;', '&#x1f34c;', '&#x1f34d;', '&#x1f34e;', '&#x1f34f;', '&#x1f350;', '&#x1f351;', '&#x1f352;', '&#x1f353;', '&#x1f354;', '&#x1f355;', '&#x1f356;', '&#x1f357;', '&#x1f358;', '&#x1f359;', '&#x1f35a;', '&#x1f35b;', '&#x1f35c;', '&#x1f35d;', '&#x1f35e;', '&#x1f35f;', '&#x1f360;', '&#x1f361;', '&#x1f362;', '&#x1f363;', '&#x1f364;', '&#x1f365;', '&#x1f366;', '&#x1f367;', '&#x1f368;', '&#x1f369;', '&#x1f36a;', '&#x1f36b;', '&#x1f36c;', '&#x1f36d;', '&#x1f36e;', '&#x1f36f;', '&#x1f370;', '&#x1f371;', '&#x1f372;', '&#x1f373;', '&#x1f374;', '&#x1f375;', '&#x1f376;', '&#x1f377;', '&#x1f378;', '&#x1f379;', '&#x1f37a;', '&#x1f37b;', '&#x1f37c;', '&#x1f37d;', '&#x1f37e;', '&#x1f37f;', '&#x1f380;', '&#x1f381;', '&#x1f382;', '&#x1f383;', '&#x1f384;', '&#x1f385;', '&#x1f3fb;', '&#x1f3fc;', '&#x1f3fd;', '&#x1f3fe;', '&#x1f3ff;', '&#x1f386;', '&#x1f387;', '&#x1f388;', '&#x1f389;', '&#x1f38a;', '&#x1f38b;', '&#x1f38c;', '&#x1f38d;', '&#x1f38e;', '&#x1f38f;', '&#x1f390;', '&#x1f391;', '&#x1f392;', '&#x1f393;', '&#x1f396;', '&#x1f397;', '&#x1f399;', '&#x1f39a;', '&#x1f39b;', '&#x1f39e;', '&#x1f39f;', '&#x1f3a0;', '&#x1f3a1;', '&#x1f3a2;', '&#x1f3a3;', '&#x1f3a4;', '&#x1f3a5;', '&#x1f3a6;', '&#x1f3a7;', '&#x1f3a8;', '&#x1f3a9;', '&#x1f3aa;', '&#x1f3ab;', '&#x1f3ac;', '&#x1f3ad;', '&#x1f3ae;', '&#x1f3af;', '&#x1f3b0;', '&#x1f3b1;', '&#x1f3b2;', '&#x1f3b3;', '&#x1f3b4;', '&#x1f3b5;', '&#x1f3b6;', '&#x1f3b7;', '&#x1f3b8;', '&#x1f3b9;', '&#x1f3ba;', '&#x1f3bb;', '&#x1f3bc;', '&#x1f3bd;', '&#x1f3be;', '&#x1f3bf;', '&#x1f3c0;', '&#x1f3c1;', '&#x1f3c2;', '&#x1f3c3;', '&#x200d;', '&#x2640;', '&#xfe0f;', '&#x2642;', '&#x1f3c4;', '&#x1f3c5;', '&#x1f3c6;', '&#x1f3c7;', '&#x1f3c8;', '&#x1f3c9;', '&#x1f3ca;', '&#x1f3cb;', '&#x1f3cc;', '&#x1f3cd;', '&#x1f3ce;', '&#x1f3cf;', '&#x1f3d0;', '&#x1f3d1;', '&#x1f3d2;', '&#x1f3d3;', '&#x1f3d4;', '&#x1f3d5;', '&#x1f3d6;', '&#x1f3d7;', '&#x1f3d8;', '&#x1f3d9;', '&#x1f3da;', '&#x1f3db;', '&#x1f3dc;', '&#x1f3dd;', '&#x1f3de;', '&#x1f3df;', '&#x1f3e0;', '&#x1f3e1;', '&#x1f3e2;', '&#x1f3e3;', '&#x1f3e4;', '&#x1f3e5;', '&#x1f3e6;', '&#x1f3e7;', '&#x1f3e8;', '&#x1f3e9;', '&#x1f3ea;', '&#x1f3eb;', '&#x1f3ec;', '&#x1f3ed;', '&#x1f3ee;', '&#x1f3ef;', '&#x1f3f0;', '&#x1f3f3;', '&#x26a7;', '&#x1f3f4;', '&#x2620;', '&#xe0067;', '&#xe0062;', '&#xe0065;', '&#xe006e;', '&#xe007f;', '&#xe0073;', '&#xe0063;', '&#xe0074;', '&#xe0077;',
// END: emoji arrays
if ( 'entities' === $type ) {
return $entities;
}
return $partials;
}
/**
* Shortens a URL, to be used as link text.
*
* @since 1.2.0
* @since 4.4.0 Moved to wp-includes/formatting.php from wp-admin/includes/misc.php and added $length param.
*
* @param string $url URL to shorten.
* @param int $length Optional. Maximum length of the shortened URL. Default 35 characters.
* @return string Shortened URL.
*/
function url_shorten( $url, $length = 35 ) {
$stripped = str_replace( array( 'https://', 'http://', 'www.' ), '', $url );
$short_url = untrailingslashit( $stripped );
if ( strlen( $short_url ) > $length ) {
$short_url = substr( $short_url, 0, $length - 3 ) . '&hellip;';
}
return $short_url;
}
/**
* Sanitizes a hex color.
*
* Returns either '', a 3 or 6 digit hex color (with #), or nothing.
* For sanitizing values without a #, see sanitize_hex_color_no_hash().
*
* @since 3.4.0
*
* @param string $color
* @return string|void
*/
function sanitize_hex_color( $color ) {
if ( '' === $color ) {
return '';
}
// 3 or 6 hex digits, or the empty string.
if ( preg_match( '|^#([A-Fa-f0-9]{3}){1,2}$|', $color ) ) {
return $color;
}
}
/**
* Sanitizes a hex color without a hash. Use sanitize_hex_color() when possible.
*
* Saving hex colors without a hash puts the burden of adding the hash on the
* UI, which makes it difficult to use or upgrade to other color types such as
* rgba, hsl, rgb, and HTML color names.
*
* Returns either '', a 3 or 6 digit hex color (without a #), or null.
*
* @since 3.4.0
*
* @param string $color
* @return string|null
*/
function sanitize_hex_color_no_hash( $color ) {
$color = ltrim( $color, '#' );
if ( '' === $color ) {
return '';
}
return sanitize_hex_color( '#' . $color ) ? $color : null;
}
/**
* Ensures that any hex color is properly hashed.
* Otherwise, returns value untouched.
*
* This method should only be necessary if using sanitize_hex_color_no_hash().
*
* @since 3.4.0
*
* @param string $color
* @return string
*/
function maybe_hash_hex_color( $color ) {
$unhashed = sanitize_hex_color_no_hash( $color );
if ( $unhashed ) {
return '#' . $unhashed;
}
return $color;
}