Wordpress 4.2.1 hotfix (put this file inside wp-includes)

August 29, 2015, 7:20 am

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README.md

Wordpress 4.2.1 hotfix

Overwrite your bad ol' wp-includes/formatting.php with this file to avoid that annoying PHP warning. If you prefer to fix it yourself instead downloading a 4.3k php file (which is pretty logical), go to the line 4144 of your local Wordpress installation, and replace this:

if ( SCRIPT_DEBUG ) {

with this:

if ( defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ) {

formatting.php

	<?php
	/**
	* Main WordPress Formatting API.
	*
	* Handles many functions for formatting output.
	*
	* @package WordPress
	*/
	/**
	* Replaces common plain text characters into formatted entities
	*
	* 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.
	*
	* @since 0.71
	* @uses $wp_cockneyreplace Array of formatted entities for certain common phrases
	*
	* @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, $static_replacements, $dynamic_characters, $dynamic_replacements,
	$default_no_texturize_tags, $default_no_texturize_shortcodes, $run_texturize = true;
	// 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 ) ) {
	/**
	* Filter whether to skip running wptexturize().
	*
	* Passing false to the filter will effectively short-circuit wptexturize().
	* returning 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 );
	} elseif ( "'" != $apos ) { // Only bother if we're doing a replacement.
	$cockney = array( "'tain't", "'twere", "'twas", "'tis", "'twill", "'til", "'bout", "'nuff", "'round", "'cause", "'em" );
	$cockneyreplace = array( $apos . "tain" . $apos . "t", $apos . "twere", $apos . "twas", $apos . "tis", $apos . "twill", $apos . "til", $apos . "bout", $apos . "nuff", $apos . "round", $apos . "cause", $apos . "em" );
	} else {
	$cockney = $cockneyreplace = array();
	}
	$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 . '$1' . $closing_single_quote;
	}
	if ( "'" !== $apos || '"' !== $closing_quote ) {
	$dynamic[ '/\'(\d\d)"(?=\Z|[.,)}\-\]]|&gt;|' . $spaces . ')/' ] = $apos . '$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;
	}
	// Quoted Numbers like '0.42'
	if ( "'" !== $opening_single_quote && "'" !== $closing_single_quote ) {
	$dynamic[ '/(?<=\A|' . $spaces . ')\'(\d[.,\d]*)\'/' ] = $opening_single_quote . '$1' . $closing_single_quote;
	}
	// Single quote at start, or preceded by (, {, <, [, ", -, or spaces.
	if ( "'" !== $opening_single_quote ) {
	$dynamic[ '/(?<=\A|[([{"\-]|&lt;|' . $spaces . ')\'/' ] = $opening_single_quote;
	}
	// Apostrophe in a word. No spaces, double apostrophes, or other punctuation.
	if ( "'" !== $apos ) {
	$dynamic[ '/(?<!' . $spaces . ')\'(?!\Z|[.,:;"\'(){}[\]\-]|&[lg]t;|' . $spaces . ')/' ] = $apos;
	}
	// 9' (prime)
	if ( "'" !== $prime ) {
	$dynamic[ '/(?<=\d)\'/' ] = $prime;
	}
	// Single quotes followed by spaces or ending punctuation.
	if ( "'" !== $closing_single_quote ) {
	$dynamic[ '/\'(?=\Z|[.,)}\-\]]|&gt;|' . $spaces . ')/' ] = $closing_single_quote;
	}
	$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]*)"/' ] = $opening_quote . '$1' . $closing_quote;
	}
	// 9" (double prime)
	if ( '"' !== $double_prime ) {
	$dynamic[ '/(?<=\d)"/' ] = $double_prime;
	}
	// Double quote at start, or preceded by (, {, <, [, -, or spaces, and not followed by spaces.
	if ( '"' !== $opening_quote ) {
	$dynamic[ '/(?<=\A|[([{\-]|&lt;|' . $spaces . ')"(?!' . $spaces . ')/' ] = $opening_quote;
	}
	// Any remaining double quotes.
	if ( '"' !== $closing_quote ) {
	$dynamic[ '/"/' ] = $closing_quote;
	}
	$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
	/**
	* Filter the list of HTML elements not to texturize.
	*
	* @since 2.8.0
	*
	* @param array $default_no_texturize_tags An array of HTML element names.
	*/
	$no_texturize_tags = apply_filters( 'no_texturize_tags', $default_no_texturize_tags );
	/**
	* Filter the list of shortcodes not to texturize.
	*
	* @since 2.8.0
	*
	* @param array $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.
	$tagnames = array_keys( $shortcode_tags );
	$tagregexp = join( '|', array_map( 'preg_quote', $tagnames ) );
	$tagregexp = "(?:$tagregexp)(?![\\w-])"; // Excerpt of get_shortcode_regex().
	$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.
	$shortcode_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 ]]
	$regex =
	'/(' // Capture the entire match.
	. '<' // Find start of element.
	. '(?(?=!--)' // Is this a comment?
	. $comment_regex // Find end of comment.
	. '|'
	. '[^>]*>' // Find end of element.
	. ')'
	. '|'
	. $shortcode_regex // Find shortcodes.
	. ')/s';
	$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 && '<!--' === substr( $curl, 0, 4 ) ) {
	// This is an HTML comment delimeter.
	continue;
	} elseif ( '<' === $first && '>' === substr( $curl, -1 ) ) {
	// This is an HTML element delimiter.
	_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 && 1 === preg_match( '/^' . $shortcode_regex . '$/', $curl ) ) {
	// This is a shortcode delimiter.
	if ( '[[' !== substr( $curl, 0, 2 ) && ']]' !== substr( $curl, -2 ) ) {
	// 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 ( false !== strpos( $curl, "'" ) ) {
	$curl = preg_replace( $dynamic_characters['apos'], $dynamic_replacements['apos'], $curl );
	}
	if ( false !== strpos( $curl, '"' ) ) {
	$curl = preg_replace( $dynamic_characters['quote'], $dynamic_replacements['quote'], $curl );
	}
	if ( false !== strpos( $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 );
	}
	}
	}
	$text = implode( '', $textarr );
	// Replace each & with &#038; unless it already looks like an entity.
	$text = preg_replace('/&(?!#(?:\d+|x[a-f0-9]+);|[a-z1-4]{1,8};)/i', '&#038;', $text);
	return $text;
	}
	/**
	* Search for disabled element tags. Push element to stack on tag open and pop
	* 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 array $stack List of open tag elements.
	* @param array $disabled_elements The tag names to match against. Spaces are not allowed in tag names.
	*/
	function _wptexturize_pushpop_element($text, &$stack, $disabled_elements) {
	// Is it an opening tag or closing tag?
	if ( '/' !== $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 ) ) {
	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 texturize
	*/
	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 $pee The text which has to be formatted.
	* @param bool $br Optional. If set, this will convert all remaining line-breaks
	* after paragraphing. Default true.
	* @return string Text which has been converted into correct paragraph tags.
	*/
	function wpautop($pee, $br = true) {
	$pre_tags = array();
	if ( trim($pee) === '' )
	return '';
	// Just to make things a little easier, pad the end.
	$pee = $pee . "\n";
	/*
	* Pre tags shouldn't be touched by autop.
	* Replace pre tags with placeholders and bring them back after autop.
	*/
	if ( strpos($pee, '<pre') !== false ) {
	$pee_parts = explode( '</pre>', $pee );
	$last_pee = array_pop($pee_parts);
	$pee = '';
	$i = 0;
	foreach ( $pee_parts as $pee_part ) {
	$start = strpos($pee_part, '<pre');
	// Malformed html?
	if ( $start === false ) {
	$pee .= $pee_part;
	continue;
	}
	$name = "<pre wp-pre-tag-$i></pre>";
	$pre_tags[$name] = substr( $pee_part, $start ) . '</pre>';
	$pee .= substr( $pee_part, 0, $start ) . $name;
	$i++;
	}
	$pee .= $last_pee;
	}
	// Change multiple <br>s into two line breaks, which will turn into paragraphs.
	$pee = preg_replace('|<br />\s*<br />|', "\n\n", $pee);
	$allblocks = '(?:table|thead|tfoot|caption|col|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|form|map|area|blockquote|address|math|style|p|h[1-6]|hr|fieldset|legend|section|article|aside|hgroup|header|footer|nav|figure|figcaption|details|menu|summary)';
	// Add a single line break above block-level opening tags.
	$pee = preg_replace('!(<' . $allblocks . '[^>]*>)!', "\n$1", $pee);
	// Add a double line break below block-level closing tags.
	$pee = preg_replace('!(</' . $allblocks . '>)!', "$1\n\n", $pee);
	// Standardize newline characters to "\n".
	$pee = str_replace(array("\r\n", "\r"), "\n", $pee);
	// Collapse line breaks before and after <option> elements so they don't get autop'd.
	if ( strpos( $pee, '<option' ) !== false ) {
	$pee = preg_replace( '|\s*<option|', '<option', $pee );
	$pee = preg_replace( '|</option>\s*|', '</option>', $pee );
	}
	/*
	* Collapse line breaks inside <object> elements, before <param> and <embed> elements
	* so they don't get autop'd.
	*/
	if ( strpos( $pee, '</object>' ) !== false ) {
	$pee = preg_replace( '|(<object[^>]*>)\s*|', '$1', $pee );
	$pee = preg_replace( '|\s*</object>|', '</object>', $pee );
	$pee = preg_replace( '%\s*(</?(?:param|embed)[^>]*>)\s*%', '$1', $pee );
	}
	/*
	* Collapse line breaks inside <audio> and <video> elements,
	* before and after <source> and <track> elements.
	*/
	if ( strpos( $pee, '<source' ) !== false || strpos( $pee, '<track' ) !== false ) {
	$pee = preg_replace( '%([<\[](?:audio|video)[^>\]]*[>\]])\s*%', '$1', $pee );
	$pee = preg_replace( '%\s*([<\[]/(?:audio|video)[>\]])%', '$1', $pee );
	$pee = preg_replace( '%\s*(<(?:source|track)[^>]*>)\s*%', '$1', $pee );
	}
	// Remove more than two contiguous line breaks.
	$pee = preg_replace("/\n\n+/", "\n\n", $pee);
	// Split up the contents into an array of strings, separated by double line breaks.
	$pees = preg_split('/\n\s*\n/', $pee, -1, PREG_SPLIT_NO_EMPTY);
	// Reset $pee prior to rebuilding.
	$pee = '';
	// Rebuild the content as a string, wrapping every bit with a <p>.
	foreach ( $pees as $tinkle ) {
	$pee .= '<p>' . trim($tinkle, "\n") . "</p>\n";
	}
	// Under certain strange conditions it could create a P of entirely whitespace.
	$pee = preg_replace('|<p>\s*</p>|', '', $pee);
	// Add a closing <p> inside <div>, <address>, or <form> tag if missing.
	$pee = preg_replace('!<p>([^<]+)</(div|address|form)>!', "<p>$1</p></$2>", $pee);
	// If an opening or closing block element tag is wrapped in a <p>, unwrap it.
	$pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)\s*</p>!', "$1", $pee);
	// In some cases <li> may get wrapped in <p>, fix them.
	$pee = preg_replace("|<p>(<li.+?)</p>|", "$1", $pee);
	// If a <blockquote> is wrapped with a <p>, move it inside the <blockquote>.
	$pee = preg_replace('|<p><blockquote([^>]*)>|i', "<blockquote$1><p>", $pee);
	$pee = str_replace('</blockquote></p>', '</p></blockquote>', $pee);
	// If an opening or closing block element tag is preceded by an opening <p> tag, remove it.
	$pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)!', "$1", $pee);
	// If an opening or closing block element tag is followed by a closing <p> tag, remove it.
	$pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*</p>!', "$1", $pee);
	// Optionally insert line breaks.
	if ( $br ) {
	// Replace newlines that shouldn't be touched with a placeholder.
	$pee = preg_replace_callback('/<(script|style).*?<\/\\1>/s', '_autop_newline_preservation_helper', $pee);
	// Replace any new line characters that aren't preceded by a <br /> with a <br />.
	$pee = preg_replace('|(?<!<br />)\s*\n|', "<br />\n", $pee);
	// Replace newline placeholders with newlines.
	$pee = str_replace('<WPPreserveNewline />', "\n", $pee);
	}
	// If a <br /> tag is after an opening or closing block tag, remove it.
	$pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*<br />!', "$1", $pee);
	// If a <br /> tag is before a subset of opening or closing block tags, remove it.
	$pee = preg_replace('!<br />(\s*</?(?:p|li|div|dl|dd|dt|th|pre|td|ul|ol)[^>]*>)!', '$1', $pee);
	$pee = preg_replace( "|\n</p>$|", '</p>', $pee );
	// Replace placeholder <pre> tags with their original content.
	if ( !empty($pre_tags) )
	$pee = str_replace(array_keys($pre_tags), array_values($pre_tags), $pee);
	return $pee;
	}
	/**
	* 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
	*
	* @param string $pee The content.
	* @return string The filtered content.
	*/
	function shortcode_unautop( $pee ) {
	global $shortcode_tags;
	if ( empty( $shortcode_tags ) || !is_array( $shortcode_tags ) ) {
	return $pee;
	}
	$tagregexp = join( '|', array_map( 'preg_quote', array_keys( $shortcode_tags ) ) );
	$spaces = wp_spaces_regexp();
	$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
	. '/s';
	return preg_replace( $pattern, '$1', $pee );
	}
	/**
	* 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
	* @access private
	*
	* @param string $string The text which is to be encoded.
	* @param 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 values; converting single quotes if set to 'single', double if set to 'double' or both if otherwise set. Default is ENT_NOQUOTES.
	* @param string $charset Optional. The character encoding of the string. Default is false.
	* @param boolean $double_encode Optional. Whether to encode existing html entities. Default is false.
	* @return string The encoded text with HTML entities.
	*/
	function _wp_specialchars( $string, $quote_style = ENT_NOQUOTES, $charset = false, $double_encode = false ) {
	$string = (string) $string;
	if ( 0 === strlen( $string ) )
	return '';
	// Don't bother if there are no specialchars - saves some processing
	if ( ! preg_match( '/[&<>"\']/', $string ) )
	return $string;
	// Account for the previous behaviour of the function 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;
	// Store the site charset as a static to avoid multiple calls to wp_load_alloptions()
	if ( ! $charset ) {
	static $_charset;
	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' ) ) )
	$charset = 'UTF-8';
	$_quote_style = $quote_style;
	if ( $quote_style === 'double' ) {
	$quote_style = ENT_COMPAT;
	$_quote_style = ENT_COMPAT;
	} elseif ( $quote_style === 'single' ) {
	$quote_style = ENT_NOQUOTES;
	}
	// Handle double encoding ourselves
	if ( $double_encode ) {
	$string = @htmlspecialchars( $string, $quote_style, $charset );
	} else {
	// Decode &amp; into &
	$string = wp_specialchars_decode( $string, $_quote_style );
	// Guarantee every &entity; is valid or re-encode the &
	$string = wp_kses_normalize_entities( $string );
	// Now re-encode everything except &entity;
	$string = preg_split( '/(&#?x?[0-9a-z]+;)/i', $string, -1, PREG_SPLIT_DELIM_CAPTURE );
	for ( $i = 0, $c = count( $string ); $i < $c; $i += 2 ) {
	$string[$i] = @htmlspecialchars( $string[$i], $quote_style, $charset );
	}
	$string = implode( '', $string );
	}
	// Backwards compatibility
	if ( 'single' === $_quote_style )
	$string = str_replace( "'", '&#039;', $string );
	return $string;
	}
	/**
	* 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 $string The text which is to be decoded.
	* @param mixed $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( $string, $quote_style = ENT_NOQUOTES ) {
	$string = (string) $string;
	if ( 0 === strlen( $string ) ) {
	return '';
	}
	// Don't bother if there are no entities - saves a lot of processing
	if ( strpos( $string, '&' ) === false ) {
	return $string;
	}
	// Match the previous behaviour 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 ( $quote_style === ENT_QUOTES ) {
	$translation = array_merge( $single, $double, $others );
	$translation_preg = array_merge( $single_preg, $double_preg, $others_preg );
	} elseif ( $quote_style === ENT_COMPAT || $quote_style === 'double' ) {
	$translation = array_merge( $double, $others );
	$translation_preg = array_merge( $double_preg, $others_preg );
	} elseif ( $quote_style === 'single' ) {
	$translation = array_merge( $single, $others );
	$translation_preg = array_merge( $single_preg, $others_preg );
	} elseif ( $quote_style === ENT_NOQUOTES ) {
	$translation = $others;
	$translation_preg = $others_preg;
	}
	// Remove zero padding on numeric entities
	$string = preg_replace( array_keys( $translation_preg ), array_values( $translation_preg ), $string );
	// Replace characters according to translation table
	return strtr( $string, $translation );
	}
	/**
	* Checks for invalid UTF8 in a string.
	*
	* @since 2.8.0
	*
	* @param string $string The text which is to be checked.
	* @param boolean $strip Optional. Whether to attempt to strip out invalid UTF8. Default is false.
	* @return string The checked text.
	*/
	function wp_check_invalid_utf8( $string, $strip = false ) {
	$string = (string) $string;
	if ( 0 === strlen( $string ) ) {
	return '';
	}
	// Store the site charset as a static to avoid multiple calls to get_option()
	static $is_utf8;
	if ( !isset( $is_utf8 ) ) {
	$is_utf8 = in_array( get_option( 'blog_charset' ), array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ) );
	}
	if ( !$is_utf8 ) {
	return $string;
	}
	// Check for support for utf8 in the installed PCRE library once and store the result in a static
	static $utf8_pcre;
	if ( !isset( $utf8_pcre ) ) {
	$utf8_pcre = @preg_match( '/^./u', 'a' );
	}
	// We can't demand utf8 in the PCRE installation, so just return the string in those cases
	if ( !$utf8_pcre ) {
	return $string;
	}
	// preg_match fails when it encounters invalid UTF8 in $string
	if ( 1 === @preg_match( '/^./us', $string ) ) {
	return $string;
	}
	// Attempt to strip the bad chars if requested (not recommended)
	if ( $strip && function_exists( 'iconv' ) ) {
	return iconv( 'utf-8', 'utf-8', $string );
	}
	return '';
	}
	/**
	* Encode the Unicode values to be used in the URI.
	*
	* @since 1.5.0
	*
	* @param string $utf8_string
	* @param int $length Max length of the string
	* @return string String with Unicode encoded for URI.
	*/
	function utf8_uri_encode( $utf8_string, $length = 0 ) {
	$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 ) {
	if ( $length && ( $unicode_length >= $length ) )
	break;
	$unicode .= chr($value);
	$unicode_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.
	*
	* @since 1.2.1
	*
	* @param string $string Text that might have accent characters
	* @return string Filtered string with replaced "nice" characters.
	*/
	function remove_accents($string) {
	if ( !preg_match('/[\x80-\xff]/', $string) )
	return $string;
	if (seems_utf8($string)) {
	$chars = array(
	// Decompositions for Latin-1 Supplement
	chr(194).chr(170) => 'a', chr(194).chr(186) => 'o',
	chr(195).chr(128) => 'A', chr(195).chr(129) => 'A',
	chr(195).chr(130) => 'A', chr(195).chr(131) => 'A',
	chr(195).chr(132) => 'A', chr(195).chr(133) => 'A',
	chr(195).chr(134) => 'AE',chr(195).chr(135) => 'C',
	chr(195).chr(136) => 'E', chr(195).chr(137) => 'E',
	chr(195).chr(138) => 'E', chr(195).chr(139) => 'E',
	chr(195).chr(140) => 'I', chr(195).chr(141) => 'I',
	chr(195).chr(142) => 'I', chr(195).chr(143) => 'I',
	chr(195).chr(144) => 'D', chr(195).chr(145) => 'N',
	chr(195).chr(146) => 'O', chr(195).chr(147) => 'O',
	chr(195).chr(148) => 'O', chr(195).chr(149) => 'O',
	chr(195).chr(150) => 'O', chr(195).chr(153) => 'U',
	chr(195).chr(154) => 'U', chr(195).chr(155) => 'U',
	chr(195).chr(156) => 'U', chr(195).chr(157) => 'Y',
	chr(195).chr(158) => 'TH',chr(195).chr(159) => 's',
	chr(195).chr(160) => 'a', chr(195).chr(161) => 'a',
	chr(195).chr(162) => 'a', chr(195).chr(163) => 'a',
	chr(195).chr(164) => 'a', chr(195).chr(165) => 'a',
	chr(195).chr(166) => 'ae',chr(195).chr(167) => 'c',
	chr(195).chr(168) => 'e', chr(195).chr(169) => 'e',
	chr(195).chr(170) => 'e', chr(195).chr(171) => 'e',
	chr(195).chr(172) => 'i', chr(195).chr(173) => 'i',
	chr(195).chr(174) => 'i', chr(195).chr(175) => 'i',
	chr(195).chr(176) => 'd', chr(195).chr(177) => 'n',
	chr(195).chr(178) => 'o', chr(195).chr(179) => 'o',
	chr(195).chr(180) => 'o', chr(195).chr(181) => 'o',
	chr(195).chr(182) => 'o', chr(195).chr(184) => 'o',
	chr(195).chr(185) => 'u', chr(195).chr(186) => 'u',
	chr(195).chr(187) => 'u', chr(195).chr(188) => 'u',
	chr(195).chr(189) => 'y', chr(195).chr(190) => 'th',
	chr(195).chr(191) => 'y', chr(195).chr(152) => 'O',
	// Decompositions for Latin Extended-A
	chr(196).chr(128) => 'A', chr(196).chr(129) => 'a',
	chr(196).chr(130) => 'A', chr(196).chr(131) => 'a',
	chr(196).chr(132) => 'A', chr(196).chr(133) => 'a',
	chr(196).chr(134) => 'C', chr(196).chr(135) => 'c',
	chr(196).chr(136) => 'C', chr(196).chr(137) => 'c',
	chr(196).chr(138) => 'C', chr(196).chr(139) => 'c',
	chr(196).chr(140) => 'C', chr(196).chr(141) => 'c',
	chr(196).chr(142) => 'D', chr(196).chr(143) => 'd',
	chr(196).chr(144) => 'D', chr(196).chr(145) => 'd',
	chr(196).chr(146) => 'E', chr(196).chr(147) => 'e',
	chr(196).chr(148) => 'E', chr(196).chr(149) => 'e',
	chr(196).chr(150) => 'E', chr(196).chr(151) => 'e',
	chr(196).chr(152) => 'E', chr(196).chr(153) => 'e',
	chr(196).chr(154) => 'E', chr(196).chr(155) => 'e',
	chr(196).chr(156) => 'G', chr(196).chr(157) => 'g',
	chr(196).chr(158) => 'G', chr(196).chr(159) => 'g',
	chr(196).chr(160) => 'G', chr(196).chr(161) => 'g',
	chr(196).chr(162) => 'G', chr(196).chr(163) => 'g',
	chr(196).chr(164) => 'H', chr(196).chr(165) => 'h',
	chr(196).chr(166) => 'H', chr(196).chr(167) => 'h',
	chr(196).chr(168) => 'I', chr(196).chr(169) => 'i',
	chr(196).chr(170) => 'I', chr(196).chr(171) => 'i',
	chr(196).chr(172) => 'I', chr(196).chr(173) => 'i',
	chr(196).chr(174) => 'I', chr(196).chr(175) => 'i',
	chr(196).chr(176) => 'I', chr(196).chr(177) => 'i',
	chr(196).chr(178) => 'IJ',chr(196).chr(179) => 'ij',
	chr(196).chr(180) => 'J', chr(196).chr(181) => 'j',
	chr(196).chr(182) => 'K', chr(196).chr(183) => 'k',
	chr(196).chr(184) => 'k', chr(196).chr(185) => 'L',
	chr(196).chr(186) => 'l', chr(196).chr(187) => 'L',
	chr(196).chr(188) => 'l', chr(196).chr(189) => 'L',
	chr(196).chr(190) => 'l', chr(196).chr(191) => 'L',
	chr(197).chr(128) => 'l', chr(197).chr(129) => 'L',
	chr(197).chr(130) => 'l', chr(197).chr(131) => 'N',
	chr(197).chr(132) => 'n', chr(197).chr(133) => 'N',
	chr(197).chr(134) => 'n', chr(197).chr(135) => 'N',
	chr(197).chr(136) => 'n', chr(197).chr(137) => 'N',
	chr(197).chr(138) => 'n', chr(197).chr(139) => 'N',
	chr(197).chr(140) => 'O', chr(197).chr(141) => 'o',
	chr(197).chr(142) => 'O', chr(197).chr(143) => 'o',
	chr(197).chr(144) => 'O', chr(197).chr(145) => 'o',
	chr(197).chr(146) => 'OE',chr(197).chr(147) => 'oe',
	chr(197).chr(148) => 'R',chr(197).chr(149) => 'r',
	chr(197).chr(150) => 'R',chr(197).chr(151) => 'r',
	chr(197).chr(152) => 'R',chr(197).chr(153) => 'r',
	chr(197).chr(154) => 'S',chr(197).chr(155) => 's',
	chr(197).chr(156) => 'S',chr(197).chr(157) => 's',
	chr(197).chr(158) => 'S',chr(197).chr(159) => 's',
	chr(197).chr(160) => 'S', chr(197).chr(161) => 's',
	chr(197).chr(162) => 'T', chr(197).chr(163) => 't',
	chr(197).chr(164) => 'T', chr(197).chr(165) => 't',
	chr(197).chr(166) => 'T', chr(197).chr(167) => 't',
	chr(197).chr(168) => 'U', chr(197).chr(169) => 'u',
	chr(197).chr(170) => 'U', chr(197).chr(171) => 'u',
	chr(197).chr(172) => 'U', chr(197).chr(173) => 'u',
	chr(197).chr(174) => 'U', chr(197).chr(175) => 'u',
	chr(197).chr(176) => 'U', chr(197).chr(177) => 'u',
	chr(197).chr(178) => 'U', chr(197).chr(179) => 'u',
	chr(197).chr(180) => 'W', chr(197).chr(181) => 'w',
	chr(197).chr(182) => 'Y', chr(197).chr(183) => 'y',
	chr(197).chr(184) => 'Y', chr(197).chr(185) => 'Z',
	chr(197).chr(186) => 'z', chr(197).chr(187) => 'Z',
	chr(197).chr(188) => 'z', chr(197).chr(189) => 'Z',
	chr(197).chr(190) => 'z', chr(197).chr(191) => 's',
	// Decompositions for Latin Extended-B
	chr(200).chr(152) => 'S', chr(200).chr(153) => 's',
	chr(200).chr(154) => 'T', chr(200).chr(155) => 't',
	// Euro Sign
	chr(226).chr(130).chr(172) => 'E',
	// GBP (Pound) Sign
	chr(194).chr(163) => '',
	// Vowels with diacritic (Vietnamese)
	// unmarked
	chr(198).chr(160) => 'O', chr(198).chr(161) => 'o',
	chr(198).chr(175) => 'U', chr(198).chr(176) => 'u',
	// grave accent
	chr(225).chr(186).chr(166) => 'A', chr(225).chr(186).chr(167) => 'a',
	chr(225).chr(186).chr(176) => 'A', chr(225).chr(186).chr(177) => 'a',
	chr(225).chr(187).chr(128) => 'E', chr(225).chr(187).chr(129) => 'e',
	chr(225).chr(187).chr(146) => 'O', chr(225).chr(187).chr(147) => 'o',
	chr(225).chr(187).chr(156) => 'O', chr(225).chr(187).chr(157) => 'o',
	chr(225).chr(187).chr(170) => 'U', chr(225).chr(187).chr(171) => 'u',
	chr(225).chr(187).chr(178) => 'Y', chr(225).chr(187).chr(179) => 'y',
	// hook
	chr(225).chr(186).chr(162) => 'A', chr(225).chr(186).chr(163) => 'a',
	chr(225).chr(186).chr(168) => 'A', chr(225).chr(186).chr(169) => 'a',
	chr(225).chr(186).chr(178) => 'A', chr(225).chr(186).chr(179) => 'a',
	chr(225).chr(186).chr(186) => 'E', chr(225).chr(186).chr(187) => 'e',
	chr(225).chr(187).chr(130) => 'E', chr(225).chr(187).chr(131) => 'e',
	chr(225).chr(187).chr(136) => 'I', chr(225).chr(187).chr(137) => 'i',
	chr(225).chr(187).chr(142) => 'O', chr(225).chr(187).chr(143) => 'o',
	chr(225).chr(187).chr(148) => 'O', chr(225).chr(187).chr(149) => 'o',
	chr(225).chr(187).chr(158) => 'O', chr(225).chr(187).chr(159) => 'o',
	chr(225).chr(187).chr(166) => 'U', chr(225).chr(187).chr(167) => 'u',
	chr(225).chr(187).chr(172) => 'U', chr(225).chr(187).chr(173) => 'u',
	chr(225).chr(187).chr(182) => 'Y', chr(225).chr(187).chr(183) => 'y',
	// tilde
	chr(225).chr(186).chr(170) => 'A', chr(225).chr(186).chr(171) => 'a',
	chr(225).chr(186).chr(180) => 'A', chr(225).chr(186).chr(181) => 'a',
	chr(225).chr(186).chr(188) => 'E', chr(225).chr(186).chr(189) => 'e',
	chr(225).chr(187).chr(132) => 'E', chr(225).chr(187).chr(133) => 'e',
	chr(225).chr(187).chr(150) => 'O', chr(225).chr(187).chr(151) => 'o',
	chr(225).chr(187).chr(160) => 'O', chr(225).chr(187).chr(161) => 'o',
	chr(225).chr(187).chr(174) => 'U', chr(225).chr(187).chr(175) => 'u',
	chr(225).chr(187).chr(184) => 'Y', chr(225).chr(187).chr(185) => 'y',
	// acute accent
	chr(225).chr(186).chr(164) => 'A', chr(225).chr(186).chr(165) => 'a',
	chr(225).chr(186).chr(174) => 'A', chr(225).chr(186).chr(175) => 'a',
	chr(225).chr(186).chr(190) => 'E', chr(225).chr(186).chr(191) => 'e',
	chr(225).chr(187).chr(144) => 'O', chr(225).chr(187).chr(145) => 'o',
	chr(225).chr(187).chr(154) => 'O', chr(225).chr(187).chr(155) => 'o',
	chr(225).chr(187).chr(168) => 'U', chr(225).chr(187).chr(169) => 'u',
	// dot below
	chr(225).chr(186).chr(160) => 'A', chr(225).chr(186).chr(161) => 'a',
	chr(225).chr(186).chr(172) => 'A', chr(225).chr(186).chr(173) => 'a',
	chr(225).chr(186).chr(182) => 'A', chr(225).chr(186).chr(183) => 'a',
	chr(225).chr(186).chr(184) => 'E', chr(225).chr(186).chr(185) => 'e',
	chr(225).chr(187).chr(134) => 'E', chr(225).chr(187).chr(135) => 'e',
	chr(225).chr(187).chr(138) => 'I', chr(225).chr(187).chr(139) => 'i',
	chr(225).chr(187).chr(140) => 'O', chr(225).chr(187).chr(141) => 'o',
	chr(225).chr(187).chr(152) => 'O', chr(225).chr(187).chr(153) => 'o',
	chr(225).chr(187).chr(162) => 'O', chr(225).chr(187).chr(163) => 'o',
	chr(225).chr(187).chr(164) => 'U', chr(225).chr(187).chr(165) => 'u',
	chr(225).chr(187).chr(176) => 'U', chr(225).chr(187).chr(177) => 'u',
	chr(225).chr(187).chr(180) => 'Y', chr(225).chr(187).chr(181) => 'y',
	// Vowels with diacritic (Chinese, Hanyu Pinyin)
	chr(201).chr(145) => 'a',
	// macron
	chr(199).chr(149) => 'U', chr(199).chr(150) => 'u',
	// acute accent
	chr(199).chr(151) => 'U', chr(199).chr(152) => 'u',
	// caron
	chr(199).chr(141) => 'A', chr(199).chr(142) => 'a',
	chr(199).chr(143) => 'I', chr(199).chr(144) => 'i',
	chr(199).chr(145) => 'O', chr(199).chr(146) => 'o',
	chr(199).chr(147) => 'U', chr(199).chr(148) => 'u',
	chr(199).chr(153) => 'U', chr(199).chr(154) => 'u',
	// grave accent
	chr(199).chr(155) => 'U', chr(199).chr(156) => 'u',
	);
	// Used for locale-specific rules
	$locale = get_locale();
	if ( 'de_DE' == $locale ) {
	$chars[ chr(195).chr(132) ] = 'Ae';
	$chars[ chr(195).chr(164) ] = 'ae';
	$chars[ chr(195).chr(150) ] = 'Oe';
	$chars[ chr(195).chr(182) ] = 'oe';
	$chars[ chr(195).chr(156) ] = 'Ue';
	$chars[ chr(195).chr(188) ] = 'ue';
	$chars[ chr(195).chr(159) ] = 'ss';
	} elseif ( 'da_DK' === $locale ) {
	$chars[ chr(195).chr(134) ] = 'Ae';
	$chars[ chr(195).chr(166) ] = 'ae';
	$chars[ chr(195).chr(152) ] = 'Oe';
	$chars[ chr(195).chr(184) ] = 'oe';
	$chars[ chr(195).chr(133) ] = 'Aa';
	$chars[ chr(195).chr(165) ] = 'aa';
	}
	$string = strtr($string, $chars);
	} else {
	$chars = array();
	// Assume ISO-8859-1 if not UTF-8
	$chars['in'] = chr(128).chr(131).chr(138).chr(142).chr(154).chr(158)
	.chr(159).chr(162).chr(165).chr(181).chr(192).chr(193).chr(194)
	.chr(195).chr(196).chr(197).chr(199).chr(200).chr(201).chr(202)
	.chr(203).chr(204).chr(205).chr(206).chr(207).chr(209).chr(210)
	.chr(211).chr(212).chr(213).chr(214).chr(216).chr(217).chr(218)
	.chr(219).chr(220).chr(221).chr(224).chr(225).chr(226).chr(227)
	.chr(228).chr(229).chr(231).chr(232).chr(233).chr(234).chr(235)
	.chr(236).chr(237).chr(238).chr(239).chr(241).chr(242).chr(243)
	.chr(244).chr(245).chr(246).chr(248).chr(249).chr(250).chr(251)
	.chr(252).chr(253).chr(255);
	$chars['out'] = "EfSZszYcYuAAAAAACEEEEIIIINOOOOOOUUUUYaaaaaaceeeeiiiinoooooouuuuyy";
	$string = strtr($string, $chars['in'], $chars['out']);
	$double_chars = array();
	$double_chars['in'] = array(chr(140), chr(156), chr(198), chr(208), chr(222), chr(223), chr(230), chr(240), chr(254));
	$double_chars['out'] = array('OE', 'oe', 'AE', 'DH', 'TH', 'ss', 'ae', 'dh', 'th');
	$string = str_replace($double_chars['in'], $double_chars['out'], $string);
	}
	return $string;
	}
	/**
	* 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.
	*
	* @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;
	$special_chars = array("?", "[", "]", "/", "\\", "=", "<", ">", ":", ";", ",", "'", "\"", "&", "$", "#", "*", "(", ")", "|", "~", "`", "!", "{", "}", chr(0));
	/**
	* Filter the list of characters to remove from a filename.
	*
	* @since 2.8.0
	*
	* @param array $special_chars Characters to remove.
	* @param string $filename_raw Filename as it was passed into sanitize_file_name().
	*/
	$special_chars = apply_filters( 'sanitize_file_name_chars', $special_chars, $filename_raw );
	$filename = preg_replace( "#\x{00a0}#siu", ' ', $filename );
	$filename = str_replace( $special_chars, '', $filename );
	$filename = str_replace( array( '%20', '+' ), '-', $filename );
	$filename = preg_replace( '/[\r\n\t -]+/', '-', $filename );
	$filename = trim( $filename, '.-_' );
	// Split the filename into a base and extension[s]
	$parts = explode('.', $filename);
	// Return if only one extension
	if ( count( $parts ) <= 2 ) {
	/**
	* Filter 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 );
	}
	// 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 extension whitelist.
	*/
	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;
	/** This filter is documented in wp-includes/formatting.php */
	return apply_filters('sanitize_file_name', $filename, $filename_raw);
	}
	/**
	* Sanitizes a username, stripping out unsafe characters.
	*
	* Removes tags, octets, 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 'sanitize_user' filter.
	*
	* @since 2.0.0
	*
	* @param string $username The username to be sanitized.
	* @param bool $strict If set 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 );
	// Kill octets
	$username = preg_replace( '|%([a-fA-F0-9][a-fA-F0-9])|', '', $username );
	$username = preg_replace( '/&.+?;/', '', $username ); // Kill entities
	// 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 );
	/**
	* Filter 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. Default false.
	*/
	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 ) {
	$raw_key = $key;
	$key = strtolower( $key );
	$key = preg_replace( '/[^a-z0-9_\-]/', '', $key );
	/**
	* Filter a sanitized key string.
	*
	* @since 3.0.0
	*
	* @param string $key Sanitized key.
	* @param string $raw_key The key prior to sanitization.
	*/
	return apply_filters( 'sanitize_key', $key, $raw_key );
	}
	/**
	* Sanitizes a title, or returns a fallback title.
	*
	* Specifically, HTML and PHP tags are stripped. Further actions can be added
	* via the plugin API. 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.
	* @param string $context Optional. The operation for which the string is sanitized
	* @return string The sanitized string.
	*/
	function sanitize_title( $title, $fallback_title = '', $context = 'save' ) {
	$raw_title = $title;
	if ( 'save' == $context )
	$title = remove_accents($title);
	/**
	* Filter 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.
	* @param string $context Optional. The operation for which the string is sanitized.
	* @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);
	$title = preg_replace('/&.+?;/', '', $title); // kill entities
	$title = str_replace('.', '-', $title);
	if ( 'save' == $context ) {
	// Convert nbsp, ndash and mdash to hyphens
	$title = str_replace( array( '%c2%a0', '%e2%80%93', '%e2%80%94' ), '-', $title );
	// Strip these characters entirely
	$title = str_replace( array(
	// 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',
	// 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',
	), '', $title );
	// Convert times to x
	$title = str_replace( '%c3%97', 'x', $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|bool 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 $class The classname to be sanitized
	* @param string $fallback Optional. The value to return if the sanitization ends up as an empty string.
	* Defaults to an empty string.
	* @return string The sanitized value
	*/
	function sanitize_html_class( $class, $fallback = '' ) {
	//Strip out any % encoded octets
	$sanitized = preg_replace( '|%[a-fA-F0-9][a-fA-F0-9]|', '', $class );
	//Limit to A-Z,a-z,0-9,_,-
	$sanitized = preg_replace( '/[^A-Za-z0-9_-]/', '', $sanitized );
	if ( '' == $sanitized )
	$sanitized = $fallback;
	/**
	* Filter a sanitized HTML class string.
	*
	* @since 2.8.0
	*
	* @param string $sanitized The sanitized HTML class.
	* @param string $class HTML class before sanitization.
	* @param string $fallback The fallback string.
	*/
	return apply_filters( 'sanitize_html_class', $sanitized, $class, $fallback );
	}
	/**
	* Converts a number of characters from a string.
	*
	* Metadata tags `<title>` and `<category>` are removed, `<br>` and `<hr>` are
	* converted into correct XHTML and Unicode characters are converted to the
	* valid range.
	*
	* @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' );
	// Translation of invalid Unicode references range to valid range
	$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;'
	);
	// Remove metadata tags
	$content = preg_replace('/<title>(.+?)<\/title>/','',$content);
	$content = preg_replace('/<category>(.+?)<\/category>/','',$content);
	// Converts lone & characters into &#38; (a.k.a. &amp;)
	$content = preg_replace('/&([^#])(?![a-z1-4]{1,8};)/i', '&#038;$1', $content);
	// Fix Word pasting
	$content = strtr($content, $wp_htmltranswinuni);
	// Just a little XHTML help
	$content = str_replace('<br>', '<br />', $content);
	$content = str_replace('<hr>', '<hr />', $content);
	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 ) {
	if ( $force || 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
	*
	* @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' );
	// Tags that can be immediately nested within themselves
	$nestable_tags = array( 'blockquote', 'div', 'object', 'q', '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);
	while ( preg_match("/<(\/?[\w:]*)\s*([^>]*)>/", $text, $regex) ) {
	$newtext .= $tagqueue;
	$i = strpos($text, $regex[0]);
	$l = strlen($regex[0]);
	// clear the shifter
	$tagqueue = '';
	// Pop or Push
	if ( isset($regex[1][0]) && '/' == $regex[1][0] ) { // End Tag
	$tag = strtolower(substr($regex[1],1));
	// 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
	// Pop
	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
	$tag = strtolower($regex[1]);
	// Tag Cleaning
	// If it's an empty tag "< >", do nothing
	if ( '' == $tag ) {
	// do nothing
	}
	// ElseIf it presents itself as a self-closing tag...
	elseif ( substr( $regex[2], -1 ) == '/' ) {
	// ...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 ( ! in_array( $tag, $single_tags ) )
	$regex[2] = trim( substr( $regex[2], 0, -1 ) ) . "></$tag";
	}
	// ElseIf it's a known single-entity tag but it doesn't close itself, do so
	elseif ( in_array($tag, $single_tags) ) {
	$regex[2] .= '/';
	}
	// Else it's not a single-entity tag
	else {
	// 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) && $tagstack[$stacksize - 1] == $tag ) {
	$tagqueue = '</' . array_pop( $tagstack ) . '>';
	$stacksize--;
	}
	$stacksize = array_push( $tagstack, $tag );
	}
	// Attributes
	$attributes = $regex[2];
	if( ! empty( $attributes ) && $attributes[0] != '>' )
	$attributes = ' ' . $attributes;
	$tag = '<' . $tag . $attributes . '>';
	//If already queuing a close tag, then put this tag on, too
	if ( !empty($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;
	// Empty Stack
	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 'format_to_edit' filter.
	*
	* @since 0.71
	*
	* @param string $content The text about to be edited.
	* @param bool $richedit Whether the $content should not pass through htmlspecialchars(). Default false (meaning it will be passed).
	* @return string The text after the filter (and possibly htmlspecialchars()) has been run.
	*/
	function format_to_edit( $content, $richedit = false ) {
	/**
	* Filter 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 ( ! $richedit )
	$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 mixed $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 $string Value to which backslashes will be added.
	* @return string String with backslashes inserted.
	*/
	function backslashit($string) {
	if ( isset( $string[0] ) && $string[0] >= '0' && $string[0] <= '9' )
	$string = '\\\\' . $string;
	return addcslashes( $string, '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 $string What to add the trailing slash to.
	* @return string String with trailing slash added.
	*/
	function trailingslashit( $string ) {
	return untrailingslashit( $string ) . '/';
	}
	/**
	* 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 $string What to remove the trailing slashes from.
	* @return string String without the trailing slashes.
	*/
	function untrailingslashit( $string ) {
	return rtrim( $string, '/\\' );
	}
	/**
	* Adds slashes to escape strings.
	*
	* Slashes will first be removed if magic_quotes_gpc is set, see {@link
	* http://www.php.net/magic_quotes} for more details.
	*
	* @since 0.71
	*
	* @param string $gpc The string returned from HTTP request data.
	* @return string Returns a string escaped with slashes.
	*/
	function addslashes_gpc($gpc) {
	if ( get_magic_quotes_gpc() )
	$gpc = stripslashes($gpc);
	return wp_slash($gpc);
	}
	/**
	* Navigates through an array and removes slashes from the values.
	*
	* If an array is passed, the array_map() function causes a callback to pass the
	* value back to the function. The slashes from this value will removed.
	*
	* @since 2.0.0
	*
	* @param mixed $value The value to be stripped.
	* @return mixed Stripped value.
	*/
	function stripslashes_deep($value) {
	if ( is_array($value) ) {
	$value = array_map('stripslashes_deep', $value);
	} elseif ( is_object($value) ) {
	$vars = get_object_vars( $value );
	foreach ($vars as $key=>$data) {
	$value->{$key} = stripslashes_deep( $data );
	}
	} elseif ( is_string( $value ) ) {
	$value = stripslashes($value);
	}
	return $value;
	}
	/**
	* Navigates through an array and encodes the values to be used in a URL.
	*
	*
	* @since 2.2.0
	*
	* @param array|string $value The array or string to be encoded.
	* @return array|string $value The encoded array (or string from the callback).
	*/
	function urlencode_deep($value) {
	$value = is_array($value) ? array_map('urlencode_deep', $value) : urlencode($value);
	return $value;
	}
	/**
	* Navigates through an array and raw encodes the values to be used in a URL.
	*
	* @since 3.4.0
	*
	* @param array|string $value The array or string to be encoded.
	* @return array|string $value The encoded array (or string from the callback).
	*/
	function rawurlencode_deep( $value ) {
	return is_array( $value ) ? array_map( 'rawurlencode_deep', $value ) : rawurlencode( $value );
	}
	/**
	* 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 ( $j == 0 ) {
	$email_no_spam_address .= '&#' . ord( $email_address[$i] ) . ';';
	} elseif ( $j == 1 ) {
	$email_no_spam_address .= $email_address[$i];
	} elseif ( $j == 2 ) {
	$email_no_spam_address .= '%' . zeroise( dechex( ord( $email_address[$i] ) ), 2 );
	}
	}
	$email_no_spam_address = str_replace( '@', '&#64;', $email_no_spam_address );
	return $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 {@link
	* 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];
	return $matches[1] . "<a href=\"$url\" rel=\"nofollow\">$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 {@link
	* 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;
	$dest = esc_url($dest);
	if ( empty($dest) )
	return $matches[0];
	// removed trailing [.,;:)] from URL
	if ( in_array( substr($dest, -1), array('.', ',', ';', ':', ')') ) === true ) {
	$ret = substr($dest, -1);
	$dest = substr($dest, 0, strlen($dest)-1);
	}
	return $matches[1] . "<a href=\"$dest\" rel=\"nofollow\">$dest</a>$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 {@link
	* 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>";
	}
	/**
	* Convert 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 ) )
	$nested_code_pre++;
	elseif ( ( '</code>' === strtolower( $piece ) || '</pre>' === strtolower( $piece ) ) && $nested_code_pre )
	$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
	$r = preg_replace( '#(<a([ \r\n\t]+[^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i', "$1$3</a>", $r );
	return $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 $string
	* );
	*
	* @since 3.4.0
	* @access private
	*
	* @param string $string The string to split.
	* @param int $goal The desired chunk length.
	* @return array Numeric array of chunks.
	*/
	function _split_str_by_whitespace( $string, $goal ) {
	$chunks = array();
	$string_nullspace = strtr( $string, "\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( $string, 0, $pos + 1 );
	$string = substr( $string, $pos + 1 );
	$string_nullspace = substr( $string_nullspace, $pos + 1 );
	}
	if ( $string ) {
	$chunks[] = $string;
	}
	return $chunks;
	}
	/**
	* 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', 'wp_rel_nofollow_callback', $text);
	$text = wp_slash($text);
	return $text;
	}
	/**
	* Callback to add rel=nofollow string to HTML A element.
	*
	* Will remove already existing rel="nofollow" and rel='nofollow' from the
	* string to prevent from invalidating (X)HTML.
	*
	* @since 2.3.0
	*
	* @param array $matches Single Match
	* @return string HTML A Element with rel nofollow.
	*/
	function wp_rel_nofollow_callback( $matches ) {
	$text = $matches[1];
	$text = str_replace(array(' rel="nofollow"', " rel='nofollow'"), '', $text);
	return "<a $text rel=\"nofollow\">";
	}
	/**
	* Convert one smiley code to the icon graphic file equivalent.
	*
	* Callback handler for {@link convert_smilies()}.
	* Looks up one smiley code in the $wpsmiliestrans global array and returns an
	* `<img>` string for that smiley.
	*
	* @global array $wpsmiliestrans
	* @since 2.8.0
	*
	* @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' );
	// Don't convert smilies that aren't images - they're probably emoji.
	if ( ! in_array( $ext, $image_exts ) ) {
	return $img;
	}
	/**
	* Filter 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 ) );
	}
	/**
	* Convert 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
	* @uses $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 proessing 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 boolean $deprecated Deprecated.
	* @return string|bool Either false or the valid email address.
	*/
	function is_email( $email, $deprecated = false ) {
	if ( ! empty( $deprecated ) )
	_deprecated_argument( __FUNCTION__, '3.0' );
	// Test for the minimum length the email can be
	if ( strlen( $email ) < 3 ) {
	/**
	* Filter 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 bool $is_email Whether the email address has passed the is_email() checks. Default false.
	* @param string $email The email address being checked.
	* @param string $message An explanatory message to the user.
	* @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 );
	}
	/**
	* Convert to ASCII from email subjects.
	*
	* @since 1.2.0
	*
	* @param string $string Subject line
	* @return string Converted string to ASCII
	*/
	function wp_iso_descrambler($string) {
	/* this may only work with iso-8859-1, I'm afraid */
	if (!preg_match('#\=\?(.+)\?Q\?(.+)\?\=#i', $string, $matches)) {
	return $string;
	} else {
	$subject = str_replace('_', ' ', $matches[2]);
	$subject = preg_replace_callback('#\=([0-9a-f]{2})#i', '_wp_iso_convert', $subject);
	return $subject;
	}
	}
	/**
	* Helper function to convert hex encoded chars to ASCII
	*
	* @since 3.1.0
	* @access private
	*
	* @param array $match The preg_replace_callback matches array
	* @return string Converted chars
	*/
	function _wp_iso_convert( $match ) {
	return chr( hexdec( strtolower( $match[1] ) ) );
	}
	/**
	* Returns a date in the GMT equivalent.
	*
	* Requires and returns a date in the Y-m-d H:i:s format. If there is a
	* timezone_string available, the date is assumed to be in that timezone,
	* otherwise it simply subtracts the value of the 'gmt_offset' option. Return
	* format can be overridden using the $format parameter.
	*
	* @since 1.2.0
	*
	* @param string $string The date to be converted.
	* @param string $format The format string for the returned date (default is Y-m-d H:i:s)
	* @return string GMT version of the date provided.
	*/
	function get_gmt_from_date( $string, $format = 'Y-m-d H:i:s' ) {
	$tz = get_option( 'timezone_string' );
	if ( $tz ) {
	$datetime = date_create( $string, new DateTimeZone( $tz ) );
	if ( ! $datetime )
	return gmdate( $format, 0 );
	$datetime->setTimezone( new DateTimeZone( 'UTC' ) );
	$string_gmt = $datetime->format( $format );
	} else {
	if ( ! preg_match( '#([0-9]{1,4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})#', $string, $matches ) )
	return gmdate( $format, 0 );
	$string_time = gmmktime( $matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1] );
	$string_gmt = gmdate( $format, $string_time - get_option( 'gmt_offset' ) * HOUR_IN_SECONDS );
	}
	return $string_gmt;
	}
	/**
	* Converts a GMT date into the correct format for the blog.
	*
	* Requires and returns a date in the Y-m-d H:i:s format. If there is a
	* timezone_string available, the returned date is in that timezone, otherwise
	* it simply adds the value of gmt_offset. Return format can be overridden
	* using the $format parameter
	*
	* @since 1.2.0
	*
	* @param string $string The date to be converted.
	* @param string $format The format string for the returned date (default is Y-m-d H:i:s)
	* @return string Formatted date relative to the timezone / GMT offset.
	*/
	function get_date_from_gmt( $string, $format = 'Y-m-d H:i:s' ) {
	$tz = get_option( 'timezone_string' );
	if ( $tz ) {
	$datetime = date_create( $string, new DateTimeZone( 'UTC' ) );
	if ( ! $datetime )
	return date( $format, 0 );
	$datetime->setTimezone( new DateTimeZone( $tz ) );
	$string_localtime = $datetime->format( $format );
	} else {
	if ( ! preg_match('#([0-9]{1,4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})#', $string, $matches) )
	return date( $format, 0 );
	$string_time = gmmktime( $matches[4], $matches[5], $matches[6], $matches[2], $matches[3], $matches[1] );
	$string_localtime = gmdate( $format, $string_time + get_option( 'gmt_offset' ) * HOUR_IN_SECONDS );
	}
	return $string_localtime;
	}
	/**
	* Computes an offset in seconds from an iso8601 timezone.
	*
	* @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) {
	// $timezone is either 'Z' or '[+|-]hhmm'
	if ($timezone == 'Z') {
	$offset = 0;
	} else {
	$sign = (substr($timezone, 0, 1) == '+') ? 1 : -1;
	$hours = intval(substr($timezone, 1, 2));
	$minutes = intval(substr($timezone, 3, 4)) / 60;
	$offset = $sign * HOUR_IN_SECONDS * ($hours + $minutes);
	}
	return $offset;
	}
	/**
	* Converts an iso8601 date to MySQL DateTime format used by post_date[_gmt].
	*
	* @since 1.5.0
	*
	* @param string $date_string Date and time in ISO 8601 format {@link http://en.wikipedia.org/wiki/ISO_8601}.
	* @param string $timezone Optional. If set to GMT returns the time minus gmt_offset. Default is 'user'.
	* @return string The date and time in MySQL DateTime format - Y-m-d H:i:s.
	*/
	function iso8601_to_datetime($date_string, $timezone = 'user') {
	$timezone = strtolower($timezone);
	if ($timezone == 'gmt') {
	preg_match('#([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(Z|[\+|\-][0-9]{2,4}){0,1}#', $date_string, $date_bits);
	if (!empty($date_bits[7])) { // we have a timezone, so let's compute an offset
	$offset = iso8601_timezone_to_offset($date_bits[7]);
	} else { // we don't have a timezone, so we assume user local timezone (not server's!)
	$offset = HOUR_IN_SECONDS * get_option('gmt_offset');
	}
	$timestamp = gmmktime($date_bits[4], $date_bits[5], $date_bits[6], $date_bits[2], $date_bits[3], $date_bits[1]);
	$timestamp -= $offset;
	return gmdate('Y-m-d H:i:s', $timestamp);
	} elseif ($timezone == 'user') {
	return preg_replace('#([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(Z|[\+|\-][0-9]{2,4}){0,1}#', '$1-$2-$3 $4:$5:$6', $date_string);
	}
	}
	/**
	* Adds a element attributes to open links in new windows.
	*
	* Comment text in popup windows should be filtered through this. Right now it's
	* a moderately dumb function, ideally it would detect whether a target or rel
	* attribute was already there and adjust its actions accordingly.
	*
	* @since 0.71
	*
	* @param string $text Content to replace links to open in a new window.
	* @return string Content that has filtered links.
	*/
	function popuplinks($text) {
	$text = preg_replace('/<a (.+?)>/i', "<a $1 target='_blank' rel='external'>", $text);
	return $text;
	}
	/**
	* 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 ) < 3 ) {
	/**
	* Filter 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 $email The sanitized email address.
	* @param string $email The email address, as provided to sanitize_email().
	* @param string $message A message to pass to the user.
	*/
	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 = join( '.', $new_subs );
	// Put the email back together
	$email = $local . '@' . $domain;
	// Congratulations your email made it!
	/** This filter is documented in wp-includes/formatting.php */
	return apply_filters( 'sanitize_email', $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
	*
	* @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 = '' ) {
	if ( empty( $to ) ) {
	$to = time();
	}
	$diff = (int) abs( $to - $from );
	if ( $diff < HOUR_IN_SECONDS ) {
	$mins = round( $diff / MINUTE_IN_SECONDS );
	if ( $mins <= 1 )
	$mins = 1;
	/* translators: min=minute */
	$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;
	$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;
	$since = sprintf( _n( '%s day', '%s days', $days ), $days );
	} elseif ( $diff < 30 * DAY_IN_SECONDS && $diff >= WEEK_IN_SECONDS ) {
	$weeks = round( $diff / WEEK_IN_SECONDS );
	if ( $weeks <= 1 )
	$weeks = 1;
	$since = sprintf( _n( '%s week', '%s weeks', $weeks ), $weeks );
	} elseif ( $diff < YEAR_IN_SECONDS && $diff >= 30 * DAY_IN_SECONDS ) {
	$months = round( $diff / ( 30 * DAY_IN_SECONDS ) );
	if ( $months <= 1 )
	$months = 1;
	$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;
	$since = sprintf( _n( '%s year', '%s years', $years ), $years );
	}
	/**
	* Filter 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.
	*
	* The excerpt word amount will be 55 words and if the amount is greater than
	* that, then the string ' [&hellip;]' will be appended to the excerpt. If the string
	* is less than 55 words, then the content will be returned as is.
	*
	* The 55 word limit can be modified by plugins/themes using the excerpt_length filter
	* The ' [&hellip;]' string can be modified by plugins/themes using the excerpt_more filter
	*
	* @since 1.5.0
	*
	* @param string $text Optional. The excerpt. If set to empty, an excerpt is generated.
	* @return string The excerpt.
	*/
	function wp_trim_excerpt($text = '') {
	$raw_excerpt = $text;
	if ( '' == $text ) {
	$text = get_the_content('');
	$text = strip_shortcodes( $text );
	/** This filter is documented in wp-includes/post-template.php */
	$text = apply_filters( 'the_content', $text );
	$text = str_replace(']]>', ']]&gt;', $text);
	/**
	* Filter the number of words in an excerpt.
	*
	* @since 2.7.0
	*
	* @param int $number The number of words. Default 55.
	*/
	$excerpt_length = apply_filters( 'excerpt_length', 55 );
	/**
	* Filter 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 );
	}
	/**
	* Filter 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( $text );
	/* translators: If your word count is based on single characters (East Asian characters),
	enter 'characters'. Otherwise, enter 'words'. Do not translate into your own language. */
	if ( 'characters' == _x( 'words', 'word count: words or characters?' ) && preg_match( '/^utf\-?8$/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 );
	}
	/**
	* Filter 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 5.
	* @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) {
	/**
	* Filter 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 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 rich text editor.
	*
	* The filter 'richedit_pre' is applied here. If $text is empty the filter will
	* be applied to an empty string.
	*
	* @since 2.0.0
	*
	* @param string $text The text to be formatted.
	* @return string The formatted text after filter is applied.
	*/
	function wp_richedit_pre($text) {
	if ( empty( $text ) ) {
	/**
	* Filter text returned for the rich text editor.
	*
	* This filter is first evaluated, and the value returned, if an empty string
	* is passed to wp_richedit_pre(). If an empty string is passed, it results
	* in a break tag and line feed.
	*
	* If a non-empty string is passed, the filter is evaluated on the wp_richedit_pre()
	* return after being formatted.
	*
	* @since 2.0.0
	*
	* @param string $output Text for the rich text editor.
	*/
	return apply_filters( 'richedit_pre', '' );
	}
	$output = convert_chars($text);
	$output = wpautop($output);
	$output = htmlspecialchars($output, ENT_NOQUOTES, get_option( 'blog_charset' ) );
	/** This filter is documented in wp-includes/formatting.php */
	return apply_filters( 'richedit_pre', $output );
	}
	/**
	* Formats text for the HTML editor.
	*
	* Unless $output is empty it will pass through htmlspecialchars before the
	* 'htmledit_pre' filter is applied.
	*
	* @since 2.5.0
	*
	* @param string $output The text to be formatted.
	* @return string Formatted text after filter applied.
	*/
	function wp_htmledit_pre($output) {
	if ( !empty($output) )
	$output = htmlspecialchars($output, ENT_NOQUOTES, get_option( 'blog_charset' ) ); // convert only < > &
	/**
	* Filter the text before it is formatted for the HTML editor.
	*
	* @since 2.5.0
	*
	* @param string $output The HTML-formatted text.
	*/
	return apply_filters( 'htmledit_pre', $output );
	}
	/**
	* Perform 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 so as 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 svalues.
	*/
	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.
	*
	* @since 2.8.0
	* @param string|array $data Unescaped data
	* @return string|array Escaped data
	*/
	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 behaviour) ampersands are also replaced. The 'clean_url' filter
	* is applied to the returned cleaned URL.
	*
	* @since 2.8.0
	*
	* @param string $url The URL to be cleaned.
	* @param array $protocols Optional. An array of acceptable protocols.
	* Defaults to 'http', 'https', 'ftp', 'ftps', 'mailto', 'news', 'irc', 'gopher', 'nntp', 'feed', 'telnet', 'mms', 'rtsp', 'svn' if not set.
	* @param string $_context Private. Use esc_url_raw() for database usage.
	* @return string The cleaned $url after the 'clean_url' filter is applied.
	*/
	function esc_url( $url, $protocols = null, $_context = 'display' ) {
	$original_url = $url;
	if ( '' == $url )
	return $url;
	$url = preg_replace('|[^a-z0-9-~+_.?#=!&;,/:%@$\|*\'()\\x80-\\xff]|i', '', $url);
	$strip = array('%0d', '%0a', '%0D', '%0A');
	$url = _deep_replace($strip, $url);
	$url = str_replace(';//', '://', $url);
	/* If the URL doesn't appear to contain a scheme, we
	* presume it needs http:// appended (unless a relative
	* link starting with /, # or ? or a php file).
	*/
	if ( strpos($url, ':') === false && ! in_array( $url[0], array( '/', '#', '?' ) ) &&
	! 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 ( '/' === $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 '';
	}
	/**
	* Filter 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 );
	}
	/**
	* Performs esc_url() for database usage.
	*
	* @since 2.8.0
	*
	* @param string $url The URL to be cleaned.
	* @param array $protocols An array of acceptable protocols.
	* @return string The cleaned URL.
	*/
	function esc_url_raw( $url, $protocols = null ) {
	return esc_url( $url, $protocols, 'db' );
	}
	/**
	* Convert entities, while preserving already-encoded entities.
	*
	* @link http://www.php.net/htmlentities Borrowed from the PHP Manual user notes.
	*
	* @since 1.2.2
	*
	* @param string $myHTML The text to be converted.
	* @return string Converted text.
	*/
	function htmlentities2($myHTML) {
	$translation_table = get_html_translation_table( HTML_ENTITIES, ENT_QUOTES );
	$translation_table[chr(38)] = '&';
	return preg_replace( "/&(?![A-Za-z]{0,4}\w{2,3};|#[0-9]{2,3};)/", "&amp;", strtr($myHTML, $translation_table) );
	}
	/**
	* Escape single quotes, htmlspecialchar " < > &, and fix 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 filter 'js_escape' 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 ) );
	/**
	* Filter 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 );
	/**
	* Filter 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 );
	/**
	* Filter 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' ) );
	/**
	* Filter 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 );
	}
	/**
	* Escape 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) );
	/**
	* Filter 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 );
	}
	/**
	* Convert 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 );
	}
	/**
	* Sanitises 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
	*
	* @param string $option The name of the option.
	* @param string $value The unsanitised value.
	* @return string Sanitized value.
	*/
	function sanitize_option($option, $value) {
	global $wpdb;
	switch ( $option ) {
	case 'admin_email' :
	case 'new_admin_email' :
	$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
	$value = sanitize_email( $value );
	if ( ! is_email( $value ) ) {
	$value = get_option( $option ); // Resets option to stored value in the case of failed sanitization
	if ( function_exists( 'add_settings_error' ) )
	add_settings_error( $option, 'invalid_admin_email', __( '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 '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':
	$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 ( $value == '0' || $value == '')
	$value = 'closed';
	break;
	case 'blogdescription':
	case 'blogname':
	$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
	$value = wp_kses_post( $value );
	$value = esc_html( $value );
	break;
	case 'blog_charset':
	$value = preg_replace('/[^a-zA-Z0-9_-]/', '', $value); // strips slashes
	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 = intval( $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 );
	$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( 'esc_url_raw', $value ) );
	$value = implode( "\n", $value );
	break;
	case 'gmt_offset':
	$value = preg_replace('/[^0-9:.-]/', '', $value); // strips slashes
	break;
	case 'siteurl':
	$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
	if ( (bool)preg_match( '#http(s?)://(.+)#i', $value) ) {
	$value = esc_url_raw($value);
	} else {
	$value = get_option( $option ); // Resets option to stored value in the case of failed sanitization
	if ( function_exists('add_settings_error') )
	add_settings_error('siteurl', 'invalid_siteurl', __('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 ( (bool)preg_match( '#http(s?)://(.+)#i', $value) ) {
	$value = esc_url_raw($value);
	} else {
	$value = get_option( $option ); // Resets option to stored value in the case of failed sanitization
	if ( function_exists('add_settings_error') )
	add_settings_error('home', 'invalid_home', __('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 ) && ! empty( $value ) ) {
	$value = get_option( $option );
	}
	break;
	case 'illegal_names':
	$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
	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_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();
	if ( ! in_array( $value, $allowed_zones ) && ! empty( $value ) ) {
	$value = get_option( $option ); // Resets option to stored value in the case of failed sanitization
	if ( function_exists('add_settings_error') )
	add_settings_error('timezone_string', 'invalid_timezone_string', __('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 );
	$value = esc_url_raw( $value );
	$value = str_replace( 'http://', '', $value );
	break;
	case 'default_role' :
	if ( ! get_role( $value ) && get_role( 'subscriber' ) )
	$value = 'subscriber';
	break;
	case 'moderation_keys':
	case 'blacklist_keys':
	$value = $wpdb->strip_invalid_text_for_column( $wpdb->options, 'option_value', $value );
	$value = explode( "\n", $value );
	$value = array_filter( array_map( 'trim', $value ) );
	$value = array_unique( $value );
	$value = implode( "\n", $value );
	break;
	}
	/**
	* Filter an option value following sanitization.
	*
	* @since 2.3.0
	*
	* @param string $value The sanitized option value.
	* @param string $option The option name.
	*/
	$value = apply_filters( "sanitize_option_{$option}", $value, $option );
	return $value;
	}
	/**
	* Parses a string into variables to be stored in an array.
	*
	* Uses {@link http://www.php.net/parse_str parse_str()} and stripslashes if
	* {@link http://www.php.net/magic_quotes magic_quotes_gpc} is on.
	*
	* @since 2.2.1
	*
	* @param string $string The string to be parsed.
	* @param array $array Variables will be stored in this array.
	*/
	function wp_parse_str( $string, &$array ) {
	parse_str( $string, $array );
	if ( get_magic_quotes_gpc() )
	$array = stripslashes_deep( $array );
	/**
	* Filter the array of variables derived from a parsed string.
	*
	* @since 2.3.0
	*
	* @param array $array The array populated with variables.
	*/
	$array = apply_filters( 'wp_parse_str', $array );
	}
	/**
	* Convert lone less than signs.
	*
	* KSES already converts lone greater than signs.
	*
	* @since 2.3.0
	*
	* @param string $text Text to be converted.
	* @return string Converted text.
	*/
	function wp_pre_kses_less_than( $text ) {
	return preg_replace_callback('%<[^>]*?((?=<)|>|$)%', 'wp_pre_kses_less_than_callback', $text);
	}
	/**
	* Callback function used by preg_replace.
	*
	* @since 2.3.0
	*
	* @param array $matches Populated by matches to preg_replace.
	* @return string The text returned after esc_html if needed.
	*/
	function wp_pre_kses_less_than_callback( $matches ) {
	if ( false === strpos($matches[0], '>') )
	return esc_html($matches[0]);
	return $matches[0];
	}
	/**
	* WordPress implementation of PHP sprintf() with filters.
	*
	* @since 2.5.0
	* @link http://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 = func_get_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) ) {
	$arg = isset($args[$matches[1]]) ? $args[$matches[1]] : '';
	$fragment = str_replace("%{$matches[1]}$", '%', $fragment);
	} else {
	++$arg_index;
	$arg = isset($args[$arg_index]) ? $args[$arg_index] : '';
	}
	/**
	* Filter 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, strval($arg) );
	}
	// Append to result and move to next fragment
	$result .= $fragment;
	$start = $end;
	}
	return $result;
	}
	/**
	* Localize 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, $args) {
	// Not a match
	if ( substr($pattern, 0, 2) != '%l' )
	return $pattern;
	// Nothing to work with
	if ( empty($args) )
	return '';
	/**
	* Filter 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( __('%s, %s'), '', '' ),
	/* translators: used to join last two items in a list with more than 2 times */
	'between_last_two' => sprintf( __('%s, and %s'), '', '' ),
	/* translators: used to join items in a list with only 2 items */
	'between_only_two' => sprintf( __('%s and %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 integer $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;
	}
	/**
	* Add a Base url to relative links in passed content.
	*
	* By default it supports the 'src' and 'href' attributes. However this can be
	* changed via the 3rd param.
	*
	* @since 2.7.0
	*
	* @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
	*
	* @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() ) ?
	$m[3] :
	WP_HTTP::make_absolute_url( $m[3], $_links_add_base )
	)
	. $m[2];
	}
	/**
	* Adds a Target attribute to all links in passed content.
	*
	* This function by default only applies to `<a>` tags, however this can be
	* modified by the 3rd param.
	*
	* *NOTE:* Any current target attributed will be stripped and replaced.
	*
	* @since 2.7.0
	*
	* @param string $content String to search for links in.
	* @param string $target The Target to add to the links.
	* @param array $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)([^>]*)>!i", '_links_add_target', $content );
	}
	/**
	* Callback to add a target attribute to all links in passed content.
	*
	* @since 2.7.0
	* @access private
	*
	* @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 ) . '">';
	}
	/**
	* Normalize EOL characters and strip 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 strip 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 $string String containing HTML tags
	* @param bool $remove_breaks optional Whether to remove left over line breaks and white space chars
	* @return string The processed string.
	*/
	function wp_strip_all_tags($string, $remove_breaks = false) {
	$string = preg_replace( '@<(script|style)[^>]*?>.*?</\\1>@si', '', $string );
	$string = strip_tags($string);
	if ( $remove_breaks )
	$string = preg_replace('/[\r\n\t ]+/', ' ', $string);
	return trim( $string );
	}
	/**
	* Sanitize a string from user input or from the db
	*
	* check for invalid UTF-8,
	* Convert single < characters to entity,
	* strip all tags,
	* remove line breaks, tabs and extra white space,
	* strip octets.
	*
	* @since 2.9.0
	*
	* @param string $str
	* @return string
	*/
	function sanitize_text_field($str) {
	$filtered = wp_check_invalid_utf8( $str );
	if ( strpos($filtered, '<') !== false ) {
	$filtered = wp_pre_kses_less_than( $filtered );
	// This will strip extra whitespace for us.
	$filtered = wp_strip_all_tags( $filtered, true );
	} else {
	$filtered = trim( preg_replace('/[\r\n\t ]+/', ' ', $filtered) );
	}
	$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 the octets.
	$filtered = trim( preg_replace('/ +/', ' ', $filtered) );
	}
	/**
	* Filter 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 );
	}
	/**
	* 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 ) );
	}
	/**
	* 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
	*/
	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 );
	}
	/**
	* Sanitize 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 );
	/**
	* Filter 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 );
	}
	/**
	* Sanitize 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( 'esc_url_raw', $urls_to_ping );
	$urls_to_ping = implode( "\n", $urls_to_ping );
	/**
	* Filter 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 );
	}
	/**
	* Add slashes to a string or array of strings.
	*
	* 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
	*
	* @param string|array $value String or array of strings to slash.
	* @return string|array Slashed $value
	*/
	function wp_slash( $value ) {
	if ( is_array( $value ) ) {
	foreach ( $value as $k => $v ) {
	if ( is_array( $v ) ) {
	$value[$k] = wp_slash( $v );
	} else {
	$value[$k] = addslashes( $v );
	}
	}
	} else {
	$value = addslashes( $value );
	}
	return $value;
	}
	/**
	* Remove slashes from a string or array of strings.
	*
	* 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 strings to unslash.
	* @return string|array Unslashed $value
	*/
	function wp_unslash( $value ) {
	return stripslashes_deep( $value );
	}
	/**
	* Extract and return the first URL from passed content.
	*
	* @since 3.6.0
	*
	* @param string $content A string which might contain a URL.
	* @return string 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 esc_url_raw( $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 ) ) {
	/**
	* Filter 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;
	}
	/**
	* Print the important emoji-related styles.
	*
	* @since 4.2.0
	*/
	function print_emoji_styles() {
	static $printed = false;
	if ( $printed ) {
	return;
	}
	$printed = true;
	?>
	<style type="text/css">
	img.wp-smiley,
	img.emoji {
	display: inline !important;
	border: none !important;
	box-shadow: none !important;
	height: 1em !important;
	width: 1em !important;
	margin: 0 .07em !important;
	vertical-align: -0.1em !important;
	background: none !important;
	padding: 0 !important;
	}
	</style>
	<?php
	}
	function print_emoji_detection_script() {
	global $wp_version;
	static $printed = false;
	if ( $printed ) {
	return;
	}
	$printed = true;
	$settings = array(
	/**
	* Filter the URL where emoji images are hosted.
	*
	* @since 4.2.0
	*
	* @param string The emoji base URL.
	*/
	'baseUrl' => apply_filters( 'emoji_url', set_url_scheme( '//s.w.org/images/core/emoji/72x72/' ) ),
	/**
	* Filter the extension of the emoji files.
	*
	* @since 4.2.0
	*
	* @param string The emoji extension. Default .png.
	*/
	'ext' => apply_filters( 'emoji_ext', '.png' ),
	);
	$version = 'ver=' . $wp_version;
	if ( defined('SCRIPT_DEBUG') && 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' ),
	);
	?>
	<script type="text/javascript">
	window._wpemojiSettings = <?php echo wp_json_encode( $settings ); ?>;
	<?php readfile( ABSPATH . WPINC . "/js/wp-emoji-loader.js" ); ?>
	</script>
	<?php
	} 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' ),
	);
	/*
	* If you're looking at a src version of this file, you'll see an "include"
	* statement below. This is used by the `grunt build` process to directly
	* include a minified version of wp-emoji-loader.js, instead of using the
	* readfile() method from above.
	*
	* If you're looking at a build version of this file, you'll see a string of
	* minified JavaScript. If you need to debug it, please turn on SCRIPT_DEBUG
	* and edit wp-emoji-loader.js directly.
	*/
	?>
	<script type="text/javascript">
	window._wpemojiSettings = <?php echo wp_json_encode( $settings ); ?>;
	!function(a,b,c){function d(a){var c=b.createElement("canvas"),d=c.getContext&&c.getContext("2d");return d&&d.fillText?(d.textBaseline="top",d.font="600 32px Arial","flag"===a?(d.fillText(String.fromCharCode(55356,56812,55356,56807),0,0),c.toDataURL().length>3e3):(d.fillText(String.fromCharCode(55357,56835),0,0),0!==d.getImageData(16,16,1,1).data[0])):!1}function e(a){var c=b.createElement("script");c.src=a,c.type="text/javascript",b.getElementsByTagName("head")[0].appendChild(c)}var f;c.supports={simple:d("simple"),flag:d("flag")},c.supports.simple&&c.supports.flag||(f=c.source||{},f.concatemoji?e(f.concatemoji):f.wpemoji&&f.twemoji&&(e(f.twemoji),e(f.wpemoji)))}(window,document,window._wpemojiSettings);
	</script>
	<?php
	}
	}
	/**
	* Convert any 4 byte emoji in a string to their equivalent HTML entity.
	*
	* Currently, only Unicode 7 emoji are supported. Skin tone modifiers are allowed,
	* all other Unicode 8 emoji will be added when the spec is finalised.
	*
	* 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 ) {
	if ( function_exists( 'mb_convert_encoding' ) ) {
	$regex = '/(
	\x23\xE2\x83\xA3 # Digits
	[\x30-\x39]\xE2\x83\xA3
	| \xF0\x9F[\x85-\x88][\xA6-\xBF] # Enclosed characters
	| \xF0\x9F[\x8C-\x97][\x80-\xBF] # Misc
	| \xF0\x9F\x98[\x80-\xBF] # Smilies
	| \xF0\x9F\x99[\x80-\x8F]
	| \xF0\x9F\x9A[\x80-\xBF] # Transport and map symbols
	)/x';
	$matches = array();
	if ( preg_match_all( $regex, $content, $matches ) ) {
	if ( ! empty( $matches[1] ) ) {
	foreach( $matches[1] as $emoji ) {
	/*
	* UTF-32's hex encoding is the same as HTML's hex encoding.
	* So, by converting the emoji from UTF-8 to UTF-32, we magically
	* get the correct hex encoding.
	*/
	$unpacked = unpack( 'H*', mb_convert_encoding( $emoji, 'UTF-32', 'UTF-8' ) );
	if ( isset( $unpacked[1] ) ) {
	$entity = '&#x' . ltrim( $unpacked[1], '0' ) . ';';
	$content = str_replace( $emoji, $entity, $content );
	}
	}
	}
	}
	}
	return $content;
	}
	/**
	* Convert 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 ) {
	$text = wp_encode_emoji( $text );
	/** This filter is documented in wp-includes/formatting.php */
	$cdn_url = apply_filters( 'emoji_url', set_url_scheme( '//s.w.org/images/core/emoji/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] ) {
	$matches = array();
	if ( preg_match_all( '/(&#x1f1(e[6-9a-f]|f[0-9a-f]);){2}/', $content, $matches ) ) {
	if ( ! empty( $matches[0] ) ) {
	foreach ( $matches[0] as $flag ) {
	$chars = str_replace( array( '&#x', ';'), '', $flag );
	list( $char1, $char2 ) = str_split( $chars, 5 );
	$entity = sprintf( '<img src="%s" alt="%s" class="wp-smiley" style="height: 1em; max-height: 1em;" />', $cdn_url . $char1 . '-' . $char2 . $ext, html_entity_decode( $flag ) );
	$content = str_replace( $flag, $entity, $content );
	}
	}
	}
	// Loosely match the Emoji Unicode range.
	$regex = '/(&#x[2-3][0-9a-f]{3};|&#x1f[1-6][0-9a-f]{2};)/';
	$matches = array();
	if ( preg_match_all( $regex, $content, $matches ) ) {
	if ( ! empty( $matches[1] ) ) {
	foreach ( $matches[1] as $emoji ) {
	$char = str_replace( array( '&#x', ';'), '', $emoji );
	$entity = sprintf( '<img src="%s" alt="%s" class="wp-smiley" style="height: 1em; max-height: 1em;" />', $cdn_url . $char . $ext, html_entity_decode( $emoji ) );
	$content = str_replace( $emoji, $entity, $content );
	}
	}
	}
	}
	// Did we exit ignore block.
	if ( '' != $ignore_block_element && '</' . $ignore_block_element . '>' == $content ) {
	$ignore_block_element = '';
	}
	$output .= $content;
	}
	return $output;
	}
	/**
	* Convert 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 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 $header ) {
	if ( strpos($header, ':') === false ) {
	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 ( strpos( $content, ';' ) !== false ) {
	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;
	}

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