site_iri: comparison web/wp-includes/functions.php

equal deleted inserted replaced

--1:000000000000
+:03b0d1493584
+<?php
+/**
+* Main WordPress API
+*
+* @package WordPress
+*/
+/**
+* Converts MySQL DATETIME field to user specified date format.
+*
+* If $dateformatstring has 'G' value, then gmmktime() function will be used to
+* make the time. If $dateformatstring is set to 'U', then mktime() function
+* will be used to make the time.
+*
+* The $translate will only be used, if it is set to true and it is by default
+* and if the $wp_locale object has the month and weekday set.
+*
+* @since 0.71
+*
+* @param string $dateformatstring Either 'G', 'U', or php date format.
+* @param string $mysqlstring Time from mysql DATETIME field.
+* @param bool $translate Optional. Default is true. Will switch format to locale.
+* @return string Date formated by $dateformatstring or locale (if available).
+*/
+function mysql2date( $dateformatstring, $mysqlstring, $translate = true ) {
+	global $wp_locale;
+	$m = $mysqlstring;
+	if ( empty( $m ) )
+		return false;
+	if( 'G' == $dateformatstring ) {
+		return strtotime( $m . ' +0000' );
+	}
+	$i = strtotime( $m );
+	if( 'U' == $dateformatstring )
+		return $i;
+	if ( $translate)
+	    return date_i18n( $dateformatstring, $i );
+	else
+	    return date( $dateformatstring, $i );
+}
+/**
+* Retrieve the current time based on specified type.
+*
+* The 'mysql' type will return the time in the format for MySQL DATETIME field.
+* The 'timestamp' type will return the current timestamp.
+*
+* If $gmt is set to either '1' or 'true', then both types will use GMT time.
+* if $gmt is false, the output is adjusted with the GMT offset in the WordPress option.
+*
+* @since 1.0.0
+*
+* @param string $type Either 'mysql' or 'timestamp'.
+* @param int|bool $gmt Optional. Whether to use GMT timezone. Default is false.
+* @return int|string String if $type is 'gmt', int if $type is 'timestamp'.
+*/
+function current_time( $type, $gmt = 0 ) {
+	switch ( $type ) {
+		case 'mysql':
+			return ( $gmt ) ? gmdate( 'Y-m-d H:i:s' ) : gmdate( 'Y-m-d H:i:s', ( time() + ( get_option( 'gmt_offset' ) * 3600 ) ) );
+			break;
+		case 'timestamp':
+			return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * 3600 );
+			break;
+	}
+}
+/**
+* Retrieve the date in localized format, based on timestamp.
+*
+* If the locale specifies the locale month and weekday, then the locale will
+* take over the format for the date. If it isn't, then the date format string
+* will be used instead.
+*
+* @since 0.71
+*
+* @param string $dateformatstring Format to display the date.
+* @param int $unixtimestamp Optional. Unix timestamp.
+* @param bool $gmt Optional, default is false. Whether to convert to GMT for time.
+* @return string The date, translated if locale specifies it.
+*/
+function date_i18n( $dateformatstring, $unixtimestamp = false, $gmt = false ) {
+	global $wp_locale;
+	$i = $unixtimestamp;
+	// Sanity check for PHP 5.1.0-
+	if ( false === $i || intval($i) < 0 ) {
+		if ( ! $gmt )
+			$i = current_time( 'timestamp' );
+		else
+			$i = time();
+		// we should not let date() interfere with our
+		// specially computed timestamp
+		$gmt = true;
+	}
+	// store original value for language with untypical grammars
+	// see http://core.trac.wordpress.org/ticket/9396
+	$req_format = $dateformatstring;
+	$datefunc = $gmt? 'gmdate' : 'date';
+	if ( ( !empty( $wp_locale->month ) ) && ( !empty( $wp_locale->weekday ) ) ) {
+		$datemonth = $wp_locale->get_month( $datefunc( 'm', $i ) );
+		$datemonth_abbrev = $wp_locale->get_month_abbrev( $datemonth );
+		$dateweekday = $wp_locale->get_weekday( $datefunc( 'w', $i ) );
+		$dateweekday_abbrev = $wp_locale->get_weekday_abbrev( $dateweekday );
+		$datemeridiem = $wp_locale->get_meridiem( $datefunc( 'a', $i ) );
+		$datemeridiem_capital = $wp_locale->get_meridiem( $datefunc( 'A', $i ) );
+		$dateformatstring = ' '.$dateformatstring;
+		$dateformatstring = preg_replace( "/([^\\\])D/", "\\1" . backslashit( $dateweekday_abbrev ), $dateformatstring );
+		$dateformatstring = preg_replace( "/([^\\\])F/", "\\1" . backslashit( $datemonth ), $dateformatstring );
+		$dateformatstring = preg_replace( "/([^\\\])l/", "\\1" . backslashit( $dateweekday ), $dateformatstring );
+		$dateformatstring = preg_replace( "/([^\\\])M/", "\\1" . backslashit( $datemonth_abbrev ), $dateformatstring );
+		$dateformatstring = preg_replace( "/([^\\\])a/", "\\1" . backslashit( $datemeridiem ), $dateformatstring );
+		$dateformatstring = preg_replace( "/([^\\\])A/", "\\1" . backslashit( $datemeridiem_capital ), $dateformatstring );
+		$dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 );
+	}
+	$j = @$datefunc( $dateformatstring, $i );
+	// allow plugins to redo this entirely for languages with untypical grammars
+	$j = apply_filters('date_i18n', $j, $req_format, $i, $gmt);
+	return $j;
+}
+/**
+* Convert number to format based on the locale.
+*
+* @since 2.3.0
+*
+* @param mixed $number The number to convert based on locale.
+* @param int $decimals Precision of the number of decimal places.
+* @return string Converted number in string format.
+*/
+function number_format_i18n( $number, $decimals = null ) {
+	global $wp_locale;
+	// let the user override the precision only
+	$decimals = ( is_null( $decimals ) ) ? $wp_locale->number_format['decimals'] : intval( $decimals );
+	$num = number_format( $number, $decimals, $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] );
+	// let the user translate digits from latin to localized language
+	return apply_filters( 'number_format_i18n', $num );
+}
+/**
+* Convert number of bytes largest unit bytes will fit into.
+*
+* It is easier to read 1kB than 1024 bytes and 1MB than 1048576 bytes. Converts
+* number of bytes to human readable number by taking the number of that unit
+* that the bytes will go into it. Supports TB value.
+*
+* Please note that integers in PHP are limited to 32 bits, unless they are on
+* 64 bit architecture, then they have 64 bit size. If you need to place the
+* larger size then what PHP integer type will hold, then use a string. It will
+* be converted to a double, which should always have 64 bit length.
+*
+* Technically the correct unit names for powers of 1024 are KiB, MiB etc.
+* @link http://en.wikipedia.org/wiki/Byte
+*
+* @since 2.3.0
+*
+* @param int|string $bytes Number of bytes. Note max integer size for integers.
+* @param int $decimals Precision of number of decimal places.
+* @return bool|string False on failure. Number string on success.
+*/
+function size_format( $bytes, $decimals = null ) {
+	$quant = array(
+		// ========================= Origin ====
+		'TB' => 1099511627776,  // pow( 1024, 4)
+		'GB' => 1073741824,     // pow( 1024, 3)
+		'MB' => 1048576,        // pow( 1024, 2)
+		'kB' => 1024,           // pow( 1024, 1)
+		'B ' => 1,              // pow( 1024, 0)
+	);
+	foreach ( $quant as $unit => $mag )
+		if ( doubleval($bytes) >= $mag )
+			return number_format_i18n( $bytes / $mag, $decimals ) . ' ' . $unit;
+	return false;
+}
+/**
+* Get the week start and end from the datetime or date string from mysql.
+*
+* @since 0.71
+*
+* @param string $mysqlstring Date or datetime field type from mysql.
+* @param int $start_of_week Optional. Start of the week as an integer.
+* @return array Keys are 'start' and 'end'.
+*/
+function get_weekstartend( $mysqlstring, $start_of_week = '' ) {
+	$my = substr( $mysqlstring, 0, 4 ); // Mysql string Year
+	$mm = substr( $mysqlstring, 8, 2 ); // Mysql string Month
+	$md = substr( $mysqlstring, 5, 2 ); // Mysql string day
+	$day = mktime( 0, 0, 0, $md, $mm, $my ); // The timestamp for mysqlstring day.
+	$weekday = date( 'w', $day ); // The day of the week from the timestamp
+	$i = 86400; // One day
+	if( !is_numeric($start_of_week) )
+		$start_of_week = get_option( 'start_of_week' );
+	if ( $weekday < $start_of_week )
+		$weekday = 7 - $start_of_week - $weekday;
+	while ( $weekday > $start_of_week ) {
+		$weekday = date( 'w', $day );
+		if ( $weekday < $start_of_week )
+			$weekday = 7 - $start_of_week - $weekday;
+		$day -= 86400;
+		$i = 0;
+	}
+	$week['start'] = $day + 86400 - $i;
+	$week['end'] = $week['start'] + 604799;
+	return $week;
+}
+/**
+* Unserialize value only if it was serialized.
+*
+* @since 2.0.0
+*
+* @param string $original Maybe unserialized original, if is needed.
+* @return mixed Unserialized data can be any type.
+*/
+function maybe_unserialize( $original ) {
+	if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in
+		return @unserialize( $original );
+	return $original;
+}
+/**
+* Check value to find if it was serialized.
+*
+* If $data is not an string, then returned value will always be false.
+* Serialized data is always a string.
+*
+* @since 2.0.5
+*
+* @param mixed $data Value to check to see if was serialized.
+* @return bool False if not serialized and true if it was.
+*/
+function is_serialized( $data ) {
+	// if it isn't a string, it isn't serialized
+	if ( !is_string( $data ) )
+		return false;
+	$data = trim( $data );
+	if ( 'N;' == $data )
+		return true;
+	if ( !preg_match( '/^([adObis]):/', $data, $badions ) )
+		return false;
+	switch ( $badions[1] ) {
+		case 'a' :
+		case 'O' :
+		case 's' :
+			if ( preg_match( "/^{$badions[1]}:[0-9]+:.*[;}]\$/s", $data ) )
+				return true;
+			break;
+		case 'b' :
+		case 'i' :
+		case 'd' :
+			if ( preg_match( "/^{$badions[1]}:[0-9.E-]+;\$/", $data ) )
+				return true;
+			break;
+	}
+	return false;
+}
+/**
+* Check whether serialized data is of string type.
+*
+* @since 2.0.5
+*
+* @param mixed $data Serialized data
+* @return bool False if not a serialized string, true if it is.
+*/
+function is_serialized_string( $data ) {
+	// if it isn't a string, it isn't a serialized string
+	if ( !is_string( $data ) )
+		return false;
+	$data = trim( $data );
+	if ( preg_match( '/^s:[0-9]+:.*;$/s', $data ) ) // this should fetch all serialized strings
+		return true;
+	return false;
+}
+/**
+* Retrieve option value based on setting name.
+*
+* If the option does not exist or does not have a value, then the return value
+* will be false. This is useful to check whether you need to install an option
+* and is commonly used during installation of plugin options and to test
+* whether upgrading is required.
+*
+* You can "short-circuit" the retrieval of the option from the database for
+* your plugin or core options that aren't protected. You can do so by hooking
+* into the 'pre_option_$option' with the $option being replaced by the option
+* name. You should not try to override special options, but you will not be
+* prevented from doing so.
+*
+* There is a second filter called 'option_$option' with the $option being
+* replaced with the option name. This gives the value as the only parameter.
+*
+* If the option was serialized, when the option was added and, or updated, then
+* it will be unserialized, when it is returned.
+*
+* @since 1.5.0
+* @package WordPress
+* @subpackage Option
+* @uses apply_filters() Calls 'pre_option_$optionname' false to allow
+*		overwriting the option value in a plugin.
+* @uses apply_filters() Calls 'option_$optionname' with the option name value.
+*
+* @param string $setting Name of option to retrieve. Should already be SQL-escaped
+* @return mixed Value set for the option.
+*/
+function get_option( $setting, $default = false ) {
+	global $wpdb;
+	// Allow plugins to short-circuit options.
+	$pre = apply_filters( 'pre_option_' . $setting, false );
+	if ( false !== $pre )
+		return $pre;
+	// prevent non-existent options from triggering multiple queries
+	$notoptions = wp_cache_get( 'notoptions', 'options' );
+	if ( isset( $notoptions[$setting] ) )
+		return $default;
+	$alloptions = wp_load_alloptions();
+	if ( isset( $alloptions[$setting] ) ) {
+		$value = $alloptions[$setting];
+	} else {
+		$value = wp_cache_get( $setting, 'options' );
+		if ( false === $value ) {
+			if ( defined( 'WP_INSTALLING' ) )
+				$suppress = $wpdb->suppress_errors();
+			// expected_slashed ($setting)
+			$row = $wpdb->get_row( "SELECT option_value FROM $wpdb->options WHERE option_name = '$setting' LIMIT 1" );
+			if ( defined( 'WP_INSTALLING' ) )
+				$wpdb->suppress_errors($suppress);
+			if ( is_object( $row) ) { // Has to be get_row instead of get_var because of funkiness with 0, false, null values
+				$value = $row->option_value;
+				wp_cache_add( $setting, $value, 'options' );
+			} else { // option does not exist, so we must cache its non-existence
+				$notoptions[$setting] = true;
+				wp_cache_set( 'notoptions', $notoptions, 'options' );
+				return $default;
+			}
+		}
+	}
+	// If home is not set use siteurl.
+	if ( 'home' == $setting && '' == $value )
+		return get_option( 'siteurl' );
+	if ( in_array( $setting, array('siteurl', 'home', 'category_base', 'tag_base') ) )
+		$value = untrailingslashit( $value );
+	return apply_filters( 'option_' . $setting, maybe_unserialize( $value ) );
+}
+/**
+* Protect WordPress special option from being modified.
+*
+* Will die if $option is in protected list. Protected options are 'alloptions'
+* and 'notoptions' options.
+*
+* @since 2.2.0
+* @package WordPress
+* @subpackage Option
+*
+* @param string $option Option name.
+*/
+function wp_protect_special_option( $option ) {
+	$protected = array( 'alloptions', 'notoptions' );
+	if ( in_array( $option, $protected ) )
+		die( sprintf( __( '%s is a protected WP option and may not be modified' ), esc_html( $option ) ) );
+}
+/**
+* Print option value after sanitizing for forms.
+*
+* @uses attr Sanitizes value.
+* @since 1.5.0
+* @package WordPress
+* @subpackage Option
+*
+* @param string $option Option name.
+*/
+function form_option( $option ) {
+	echo esc_attr(get_option( $option ) );
+}
+/**
+* Retrieve all autoload options or all options, if no autoloaded ones exist.
+*
+* This is different from wp_load_alloptions() in that this function does not
+* cache its results and will retrieve all options from the database every time
+*
+* it is called.
+*
+* @since 1.0.0
+* @package WordPress
+* @subpackage Option
+* @uses apply_filters() Calls 'pre_option_$optionname' hook with option value as parameter.
+* @uses apply_filters() Calls 'all_options' on options list.
+*
+* @return array List of all options.
+*/
+function get_alloptions() {
+	global $wpdb;
+	$show = $wpdb->hide_errors();
+	if ( !$options = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ) )
+		$options = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" );
+	$wpdb->show_errors($show);
+	foreach ( (array) $options as $option ) {
+		// "When trying to design a foolproof system,
+		//  never underestimate the ingenuity of the fools :)" -- Dougal
+		if ( in_array( $option->option_name, array( 'siteurl', 'home', 'category_base', 'tag_base' ) ) )
+			$option->option_value = untrailingslashit( $option->option_value );
+		$value = maybe_unserialize( $option->option_value );
+		$all_options->{$option->option_name} = apply_filters( 'pre_option_' . $option->option_name, $value );
+	}
+	return apply_filters( 'all_options', $all_options );
+}
+/**
+* Loads and caches all autoloaded options, if available or all options.
+*
+* This is different from get_alloptions(), in that this function will cache the
+* options and will return the cached options when called again.
+*
+* @since 2.2.0
+* @package WordPress
+* @subpackage Option
+*
+* @return array List all options.
+*/
+function wp_load_alloptions() {
+	global $wpdb;
+	$alloptions = wp_cache_get( 'alloptions', 'options' );
+	if ( !$alloptions ) {
+		$suppress = $wpdb->suppress_errors();
+		if ( !$alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ) )
+			$alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" );
+		$wpdb->suppress_errors($suppress);
+		$alloptions = array();
+		foreach ( (array) $alloptions_db as $o )
+			$alloptions[$o->option_name] = $o->option_value;
+		wp_cache_add( 'alloptions', $alloptions, 'options' );
+	}
+	return $alloptions;
+}
+/**
+* Update the value of an option that was already added.
+*
+* You do not need to serialize values, if the value needs to be serialize, then
+* it will be serialized before it is inserted into the database. Remember,
+* resources can not be serialized or added as an option.
+*
+* If the option does not exist, then the option will be added with the option
+* value, but you will not be able to set whether it is autoloaded. If you want
+* to set whether an option autoloaded, then you need to use the add_option().
+*
+* Before the option is updated, then the filter named
+* 'pre_update_option_$option_name', with the $option_name as the $option_name
+* parameter value, will be called. The hook should accept two parameters, the
+* first is the new value and the second is the old value.  Whatever is
+* returned will be used as the new value.
+*
+* After the value has been updated the action named 'update_option_$option_name'
+* will be called.  This action receives two parameters the first being the old
+* value and the second the new value.
+*
+* @since 1.0.0
+* @package WordPress
+* @subpackage Option
+*
+* @param string $option_name Option name. Expected to not be SQL-escaped
+* @param mixed $newvalue Option value.
+* @return bool False if value was not updated and true if value was updated.
+*/
+function update_option( $option_name, $newvalue ) {
+	global $wpdb;
+	wp_protect_special_option( $option_name );
+	$safe_option_name = $wpdb->escape( $option_name );
+	$newvalue = sanitize_option( $option_name, $newvalue );
+	$oldvalue = get_option( $safe_option_name );
+	$newvalue = apply_filters( 'pre_update_option_' . $option_name, $newvalue, $oldvalue );
+	// If the new and old values are the same, no need to update.
+	if ( $newvalue === $oldvalue )
+		return false;
+	if ( false === $oldvalue ) {
+		add_option( $option_name, $newvalue );
+		return true;
+	}
+	$notoptions = wp_cache_get( 'notoptions', 'options' );
+	if ( is_array( $notoptions ) && isset( $notoptions[$option_name] ) ) {
+		unset( $notoptions[$option_name] );
+		wp_cache_set( 'notoptions', $notoptions, 'options' );
+	}
+	$_newvalue = $newvalue;
+	$newvalue = maybe_serialize( $newvalue );
+	$alloptions = wp_load_alloptions();
+	if ( isset( $alloptions[$option_name] ) ) {
+		$alloptions[$option_name] = $newvalue;
+		wp_cache_set( 'alloptions', $alloptions, 'options' );
+	} else {
+		wp_cache_set( $option_name, $newvalue, 'options' );
+	}
+	$wpdb->update($wpdb->options, array('option_value' => $newvalue), array('option_name' => $option_name) );
+	if ( $wpdb->rows_affected == 1 ) {
+		do_action( "update_option_{$option_name}", $oldvalue, $_newvalue );
+		return true;
+	}
+	return false;
+}
+/**
+* Add a new option.
+*
+* You do not need to serialize values, if the value needs to be serialize, then
+* it will be serialized before it is inserted into the database. Remember,
+* resources can not be serialized or added as an option.
+*
+* You can create options without values and then add values later. Does not
+* check whether the option has already been added, but does check that you
+* aren't adding a protected WordPress option. Care should be taken to not name
+* options, the same as the ones which are protected and to not add options
+* that were already added.
+*
+* The filter named 'add_option_$optionname', with the $optionname being
+* replaced with the option's name, will be called. The hook should accept two
+* parameters, the first is the option name, and the second is the value.
+*
+* @package WordPress
+* @subpackage Option
+* @since 1.0.0
+* @link http://alex.vort-x.net/blog/ Thanks Alex Stapleton
+*
+* @param string $name Option name to add. Expects to NOT be SQL escaped.
+* @param mixed $value Optional. Option value, can be anything.
+* @param mixed $deprecated Optional. Description. Not used anymore.
+* @param bool $autoload Optional. Default is enabled. Whether to load the option when WordPress starts up.
+* @return null returns when finished.
+*/
+function add_option( $name, $value = '', $deprecated = '', $autoload = 'yes' ) {
+	global $wpdb;
+	wp_protect_special_option( $name );
+	$safe_name = $wpdb->escape( $name );
+	$value = sanitize_option( $name, $value );
+	// Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query
+	$notoptions = wp_cache_get( 'notoptions', 'options' );
+	if ( !is_array( $notoptions ) || !isset( $notoptions[$name] ) )
+		if ( false !== get_option( $safe_name ) )
+			return;
+	$value = maybe_serialize( $value );
+	$autoload = ( 'no' === $autoload ) ? 'no' : 'yes';
+	if ( 'yes' == $autoload ) {
+		$alloptions = wp_load_alloptions();
+		$alloptions[$name] = $value;
+		wp_cache_set( 'alloptions', $alloptions, 'options' );
+	} else {
+		wp_cache_set( $name, $value, 'options' );
+	}
+	// This option exists now
+	$notoptions = wp_cache_get( 'notoptions', 'options' ); // yes, again... we need it to be fresh
+	if ( is_array( $notoptions ) && isset( $notoptions[$name] ) ) {
+		unset( $notoptions[$name] );
+		wp_cache_set( 'notoptions', $notoptions, 'options' );
+	}
+	$wpdb->insert($wpdb->options, array('option_name' => $name, 'option_value' => $value, 'autoload' => $autoload) );
+	do_action( "add_option_{$name}", $name, $value );
+	return;
+}
+/**
+* Removes option by name and prevents removal of protected WordPress options.
+*
+* @package WordPress
+* @subpackage Option
+* @since 1.2.0
+*
+* @param string $name Option name to remove.
+* @return bool True, if succeed. False, if failure.
+*/
+function delete_option( $name ) {
+	global $wpdb;
+	wp_protect_special_option( $name );
+	// Get the ID, if no ID then return
+	// expected_slashed ($name)
+	$option = $wpdb->get_row( "SELECT option_id, autoload FROM $wpdb->options WHERE option_name = '$name'" );
+	if ( is_null($option) || !$option->option_id )
+		return false;
+	// expected_slashed ($name)
+	$wpdb->query( "DELETE FROM $wpdb->options WHERE option_name = '$name'" );
+	if ( 'yes' == $option->autoload ) {
+		$alloptions = wp_load_alloptions();
+		if ( isset( $alloptions[$name] ) ) {
+			unset( $alloptions[$name] );
+			wp_cache_set( 'alloptions', $alloptions, 'options' );
+		}
+	} else {
+		wp_cache_delete( $name, 'options' );
+	}
+	return true;
+}
+/**
+* Delete a transient
+*
+* @since 2.8.0
+* @package WordPress
+* @subpackage Transient
+*
+* @param string $transient Transient name. Expected to not be SQL-escaped
+* @return bool true if successful, false otherwise
+*/
+function delete_transient($transient) {
+	global $_wp_using_ext_object_cache, $wpdb;
+	if ( $_wp_using_ext_object_cache ) {
+		return wp_cache_delete($transient, 'transient');
+	} else {
+		$transient = '_transient_' . $wpdb->escape($transient);
+		return delete_option($transient);
+	}
+}
+/**
+* Get the value of a transient
+*
+* If the transient does not exist or does not have a value, then the return value
+* will be false.
+*
+* @since 2.8.0
+* @package WordPress
+* @subpackage Transient
+*
+* @param string $transient Transient name. Expected to not be SQL-escaped
+* @return mixed Value of transient
+*/
+function get_transient($transient) {
+	global $_wp_using_ext_object_cache, $wpdb;
+	$pre = apply_filters( 'pre_transient_' . $transient, false );
+	if ( false !== $pre )
+		return $pre;
+	if ( $_wp_using_ext_object_cache ) {
+		$value = wp_cache_get($transient, 'transient');
+	} else {
+		$transient_option = '_transient_' . $wpdb->escape($transient);
+		// If option is not in alloptions, it is not autoloaded and thus has a timeout
+		$alloptions = wp_load_alloptions();
+		if ( !isset( $alloptions[$transient_option] ) ) {
+			$transient_timeout = '_transient_timeout_' . $wpdb->escape($transient);
+			if ( get_option($transient_timeout) < time() ) {
+				delete_option($transient_option);
+				delete_option($transient_timeout);
+				return false;
+			}
+		}
+		$value = get_option($transient_option);
+	}
+	return apply_filters('transient_' . $transient, $value);
+}
+/**
+* Set/update the value of a transient
+*
+* You do not need to serialize values, if the value needs to be serialize, then
+* it will be serialized before it is set.
+*
+* @since 2.8.0
+* @package WordPress
+* @subpackage Transient
+*
+* @param string $transient Transient name. Expected to not be SQL-escaped
+* @param mixed $value Transient value.
+* @param int $expiration Time until expiration in seconds, default 0
+* @return bool False if value was not set and true if value was set.
+*/
+function set_transient($transient, $value, $expiration = 0) {
+	global $_wp_using_ext_object_cache, $wpdb;
+	if ( $_wp_using_ext_object_cache ) {
+		return wp_cache_set($transient, $value, 'transient', $expiration);
+	} else {
+		$transient_timeout = '_transient_timeout_' . $transient;
+		$transient = '_transient_' . $transient;
+		$safe_transient = $wpdb->escape($transient);
+		if ( false === get_option( $safe_transient ) ) {
+			$autoload = 'yes';
+			if ( 0 != $expiration ) {
+				$autoload = 'no';
+				add_option($transient_timeout, time() + $expiration, '', 'no');
+			}
+			return add_option($transient, $value, '', $autoload);
+		} else {
+			if ( 0 != $expiration )
+				update_option($transient_timeout, time() + $expiration);
+			return update_option($transient, $value);
+		}
+	}
+}
+/**
+* Saves and restores user interface settings stored in a cookie.
+*
+* Checks if the current user-settings cookie is updated and stores it. When no
+* cookie exists (different browser used), adds the last saved cookie restoring
+* the settings.
+*
+* @package WordPress
+* @subpackage Option
+* @since 2.7.0
+*/
+function wp_user_settings() {
+	if ( ! is_admin() )
+		return;
+	if ( defined('DOING_AJAX') )
+		return;
+	if ( ! $user = wp_get_current_user() )
+		return;
+	$settings = get_user_option( 'user-settings', $user->ID, false );
+	if ( isset( $_COOKIE['wp-settings-' . $user->ID] ) ) {
+		$cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] );
+		if ( ! empty( $cookie ) && strpos( $cookie, '=' ) ) {
+			if ( $cookie == $settings )
+				return;
+			$last_time = (int) get_user_option( 'user-settings-time', $user->ID, false );
+			$saved = isset( $_COOKIE['wp-settings-time-' . $user->ID]) ? preg_replace( '/[^0-9]/', '', $_COOKIE['wp-settings-time-' . $user->ID] ) : 0;
+			if ( $saved > $last_time ) {
+				update_user_option( $user->ID, 'user-settings', $cookie, false );
+				update_user_option( $user->ID, 'user-settings-time', time() - 5, false );
+				return;
+			}
+		}
+	}
+	setcookie( 'wp-settings-' . $user->ID, $settings, time() + 31536000, SITECOOKIEPATH );
+	setcookie( 'wp-settings-time-' . $user->ID, time(), time() + 31536000, SITECOOKIEPATH );
+	$_COOKIE['wp-settings-' . $user->ID] = $settings;
+}
+/**
+* Retrieve user interface setting value based on setting name.
+*
+* @package WordPress
+* @subpackage Option
+* @since 2.7.0
+*
+* @param string $name The name of the setting.
+* @param string $default Optional default value to return when $name is not set.
+* @return mixed the last saved user setting or the default value/false if it doesn't exist.
+*/
+function get_user_setting( $name, $default = false ) {
+	$all = get_all_user_settings();
+	return isset($all[$name]) ? $all[$name] : $default;
+}
+/**
+* Add or update user interface setting.
+*
+* Both $name and $value can contain only ASCII letters, numbers and underscores.
+* This function has to be used before any output has started as it calls setcookie().
+*
+* @package WordPress
+* @subpackage Option
+* @since 2.8.0
+*
+* @param string $name The name of the setting.
+* @param string $value The value for the setting.
+* @return bool true if set successfully/false if not.
+*/
+function set_user_setting( $name, $value ) {
+	if ( headers_sent() )
+		return false;
+	$all = get_all_user_settings();
+	$name = preg_replace( '/[^A-Za-z0-9_]+/', '', $name );
+	if ( empty($name) )
+		return false;
+	$all[$name] = $value;
+	return wp_set_all_user_settings($all);
+}
+/**
+* Delete user interface settings.
+*
+* Deleting settings would reset them to the defaults.
+* This function has to be used before any output has started as it calls setcookie().
+*
+* @package WordPress
+* @subpackage Option
+* @since 2.7.0
+*
+* @param mixed $names The name or array of names of the setting to be deleted.
+* @return bool true if deleted successfully/false if not.
+*/
+function delete_user_setting( $names ) {
+	if ( headers_sent() )
+		return false;
+	$all = get_all_user_settings();
+	$names = (array) $names;
+	foreach ( $names as $name ) {
+		if ( isset($all[$name]) ) {
+			unset($all[$name]);
+			$deleted = true;
+		}
+	}
+	if ( isset($deleted) )
+		return wp_set_all_user_settings($all);
+	return false;
+}
+/**
+* Retrieve all user interface settings.
+*
+* @package WordPress
+* @subpackage Option
+* @since 2.7.0
+*
+* @return array the last saved user settings or empty array.
+*/
+function get_all_user_settings() {
+	global $_updated_user_settings;
+	if ( ! $user = wp_get_current_user() )
+		return array();
+	if ( isset($_updated_user_settings) && is_array($_updated_user_settings) )
+		return $_updated_user_settings;
+	$all = array();
+	if ( isset($_COOKIE['wp-settings-' . $user->ID]) ) {
+		$cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] );
+		if ( $cookie && strpos($cookie, '=') ) // the '=' cannot be 1st char
+			parse_str($cookie, $all);
+	} else {
+		$option = get_user_option('user-settings', $user->ID);
+		if ( $option && is_string($option) )
+			parse_str( $option, $all );
+	}
+	return $all;
+}
+/**
+* Private. Set all user interface settings.
+*
+* @package WordPress
+* @subpackage Option
+* @since 2.8.0
+*
+*/
+function wp_set_all_user_settings($all) {
+	global $_updated_user_settings;
+	if ( ! $user = wp_get_current_user() )
+		return false;
+	$_updated_user_settings = $all;
+	$settings = '';
+	foreach ( $all as $k => $v ) {
+		$v = preg_replace( '/[^A-Za-z0-9_]+/', '', $v );
+		$settings .= $k . '=' . $v . '&';
+	}
+	$settings = rtrim($settings, '&');
+	update_user_option( $user->ID, 'user-settings', $settings, false );
+	update_user_option( $user->ID, 'user-settings-time', time(), false );
+	return true;
+}
+/**
+* Delete the user settings of the current user.
+*
+* @package WordPress
+* @subpackage Option
+* @since 2.7.0
+*/
+function delete_all_user_settings() {
+	if ( ! $user = wp_get_current_user() )
+		return;
+	update_user_option( $user->ID, 'user-settings', '', false );
+	setcookie('wp-settings-' . $user->ID, ' ', time() - 31536000, SITECOOKIEPATH);
+}
+/**
+* Serialize data, if needed.
+*
+* @since 2.0.5
+*
+* @param mixed $data Data that might be serialized.
+* @return mixed A scalar data
+*/
+function maybe_serialize( $data ) {
+	if ( is_array( $data ) || is_object( $data ) )
+		return serialize( $data );
+	if ( is_serialized( $data ) )
+		return serialize( $data );
+	return $data;
+}
+/**
+* Strip HTML and put links at the bottom of stripped content.
+*
+* Searches for all of the links, strips them out of the content, and places
+* them at the bottom of the content with numbers.
+*
+* @since 0.71
+*
+* @param string $content Content to get links
+* @return string HTML stripped out of content with links at the bottom.
+*/
+function make_url_footnote( $content ) {
+	preg_match_all( '/<a(.+?)href=\"(.+?)\"(.*?)>(.+?)<\/a>/', $content, $matches );
+	$links_summary = "\n";
+	for ( $i=0; $i<count($matches[0]); $i++ ) {
+		$link_match = $matches[0][$i];
+		$link_number = '['.($i+1).']';
+		$link_url = $matches[2][$i];
+		$link_text = $matches[4][$i];
+		$content = str_replace( $link_match, $link_text . ' ' . $link_number, $content );
+		$link_url = ( ( strtolower( substr( $link_url, 0, 7 ) ) != 'http://' ) && ( strtolower( substr( $link_url, 0, 8 ) ) != 'https://' ) ) ? get_option( 'home' ) . $link_url : $link_url;
+		$links_summary .= "\n" . $link_number . ' ' . $link_url;
+	}
+	$content  = strip_tags( $content );
+	$content .= $links_summary;
+	return $content;
+}
+/**
+* Retrieve post title from XMLRPC XML.
+*
+* If the title element is not part of the XML, then the default post title from
+* the $post_default_title will be used instead.
+*
+* @package WordPress
+* @subpackage XMLRPC
+* @since 0.71
+*
+* @global string $post_default_title Default XMLRPC post title.
+*
+* @param string $content XMLRPC XML Request content
+* @return string Post title
+*/
+function xmlrpc_getposttitle( $content ) {
+	global $post_default_title;
+	if ( preg_match( '/<title>(.+?)<\/title>/is', $content, $matchtitle ) ) {
+		$post_title = $matchtitle[1];
+	} else {
+		$post_title = $post_default_title;
+	}
+	return $post_title;
+}
+/**
+* Retrieve the post category or categories from XMLRPC XML.
+*
+* If the category element is not found, then the default post category will be
+* used. The return type then would be what $post_default_category. If the
+* category is found, then it will always be an array.
+*
+* @package WordPress
+* @subpackage XMLRPC
+* @since 0.71
+*
+* @global string $post_default_category Default XMLRPC post category.
+*
+* @param string $content XMLRPC XML Request content
+* @return string|array List of categories or category name.
+*/
+function xmlrpc_getpostcategory( $content ) {
+	global $post_default_category;
+	if ( preg_match( '/<category>(.+?)<\/category>/is', $content, $matchcat ) ) {
+		$post_category = trim( $matchcat[1], ',' );
+		$post_category = explode( ',', $post_category );
+	} else {
+		$post_category = $post_default_category;
+	}
+	return $post_category;
+}
+/**
+* XMLRPC XML content without title and category elements.
+*
+* @package WordPress
+* @subpackage XMLRPC
+* @since 0.71
+*
+* @param string $content XMLRPC XML Request content
+* @return string XMLRPC XML Request content without title and category elements.
+*/
+function xmlrpc_removepostdata( $content ) {
+	$content = preg_replace( '/<title>(.+?)<\/title>/si', '', $content );
+	$content = preg_replace( '/<category>(.+?)<\/category>/si', '', $content );
+	$content = trim( $content );
+	return $content;
+}
+/**
+* Open the file handle for debugging.
+*
+* This function is used for XMLRPC feature, but it is general purpose enough
+* to be used in anywhere.
+*
+* @see fopen() for mode options.
+* @package WordPress
+* @subpackage Debug
+* @since 0.71
+* @uses $debug Used for whether debugging is enabled.
+*
+* @param string $filename File path to debug file.
+* @param string $mode Same as fopen() mode parameter.
+* @return bool|resource File handle. False on failure.
+*/
+function debug_fopen( $filename, $mode ) {
+	global $debug;
+	if ( 1 == $debug ) {
+		$fp = fopen( $filename, $mode );
+		return $fp;
+	} else {
+		return false;
+	}
+}
+/**
+* Write contents to the file used for debugging.
+*
+* Technically, this can be used to write to any file handle when the global
+* $debug is set to 1 or true.
+*
+* @package WordPress
+* @subpackage Debug
+* @since 0.71
+* @uses $debug Used for whether debugging is enabled.
+*
+* @param resource $fp File handle for debugging file.
+* @param string $string Content to write to debug file.
+*/
+function debug_fwrite( $fp, $string ) {
+	global $debug;
+	if ( 1 == $debug )
+		fwrite( $fp, $string );
+}
+/**
+* Close the debugging file handle.
+*
+* Technically, this can be used to close any file handle when the global $debug
+* is set to 1 or true.
+*
+* @package WordPress
+* @subpackage Debug
+* @since 0.71
+* @uses $debug Used for whether debugging is enabled.
+*
+* @param resource $fp Debug File handle.
+*/
+function debug_fclose( $fp ) {
+	global $debug;
+	if ( 1 == $debug )
+		fclose( $fp );
+}
+/**
+* Check content for video and audio links to add as enclosures.
+*
+* Will not add enclosures that have already been added and will
+* remove enclosures that are no longer in the post. This is called as
+* pingbacks and trackbacks.
+*
+* @package WordPress
+* @since 1.5.0
+*
+* @uses $wpdb
+*
+* @param string $content Post Content
+* @param int $post_ID Post ID
+*/
+function do_enclose( $content, $post_ID ) {
+	global $wpdb;
+	include_once( ABSPATH . WPINC . '/class-IXR.php' );
+	$log = debug_fopen( ABSPATH . 'enclosures.log', 'a' );
+	$post_links = array();
+	debug_fwrite( $log, 'BEGIN ' . date( 'YmdHis', time() ) . "\n" );
+	$pung = get_enclosed( $post_ID );
+	$ltrs = '\w';
+	$gunk = '/#~:.?+=&%@!\-';
+	$punc = '.:?\-';
+	$any = $ltrs . $gunk . $punc;
+	preg_match_all( "{\b http : [$any] +? (?= [$punc] * [^$any] | $)}x", $content, $post_links_temp );
+	debug_fwrite( $log, 'Post contents:' );
+	debug_fwrite( $log, $content . "\n" );
+	foreach ( $pung as $link_test ) {
+		if ( !in_array( $link_test, $post_links_temp[0] ) ) { // link no longer in post
+			$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, $link_test . '%') );
+		}
+	}
+	foreach ( (array) $post_links_temp[0] as $link_test ) {
+		if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already
+			$test = parse_url( $link_test );
+			if ( isset( $test['query'] ) )
+				$post_links[] = $link_test;
+			elseif ( $test['path'] != '/' && $test['path'] != '' )
+				$post_links[] = $link_test;
+		}
+	}
+	foreach ( (array) $post_links as $url ) {
+		if ( $url != '' && !$wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, $url . '%' ) ) ) {
+			if ( $headers = wp_get_http_headers( $url) ) {
+				$len = (int) $headers['content-length'];
+				$type = $headers['content-type'];
+				$allowed_types = array( 'video', 'audio' );
+				if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) {
+					$meta_value = "$url\n$len\n$type\n";
+					$wpdb->insert($wpdb->postmeta, array('post_id' => $post_ID, 'meta_key' => 'enclosure', 'meta_value' => $meta_value) );
+				}
+			}
+		}
+	}
+}
+/**
+* Perform a HTTP HEAD or GET request.
+*
+* If $file_path is a writable filename, this will do a GET request and write
+* the file to that path.
+*
+* @since 2.5.0
+*
+* @param string $url URL to fetch.
+* @param string|bool $file_path Optional. File path to write request to.
+* @param bool $deprecated Deprecated. Not used.
+* @return bool|string False on failure and string of headers if HEAD request.
+*/
+function wp_get_http( $url, $file_path = false, $deprecated = false ) {
+	@set_time_limit( 60 );
+	$options = array();
+	$options['redirection'] = 5;
+	if ( false == $file_path )
+		$options['method'] = 'HEAD';
+	else
+		$options['method'] = 'GET';
+	$response = wp_remote_request($url, $options);
+	if ( is_wp_error( $response ) )
+		return false;
+	$headers = wp_remote_retrieve_headers( $response );
+	$headers['response'] = $response['response']['code'];
+	if ( false == $file_path )
+		return $headers;
+	// GET request - write it to the supplied filename
+	$out_fp = fopen($file_path, 'w');
+	if ( !$out_fp )
+		return $headers;
+	fwrite( $out_fp,  $response['body']);
+	fclose($out_fp);
+	return $headers;
+}
+/**
+* Retrieve HTTP Headers from URL.
+*
+* @since 1.5.1
+*
+* @param string $url
+* @param bool $deprecated Not Used.
+* @return bool|string False on failure, headers on success.
+*/
+function wp_get_http_headers( $url, $deprecated = false ) {
+	$response = wp_remote_head( $url );
+	if ( is_wp_error( $response ) )
+		return false;
+	return wp_remote_retrieve_headers( $response );
+}
+/**
+* Whether today is a new day.
+*
+* @since 0.71
+* @uses $day Today
+* @uses $previousday Previous day
+*
+* @return int 1 when new day, 0 if not a new day.
+*/
+function is_new_day() {
+	global $day, $previousday;
+	if ( $day != $previousday )
+		return 1;
+	else
+		return 0;
+}
+/**
+* Build URL query based on an associative and, or indexed array.
+*
+* This is a convenient function for easily building url queries. It sets the
+* separator to '&' and uses _http_build_query() function.
+*
+* @see _http_build_query() Used to build the query
+* @link http://us2.php.net/manual/en/function.http-build-query.php more on what
+*		http_build_query() does.
+*
+* @since 2.3.0
+*
+* @param array $data URL-encode key/value pairs.
+* @return string URL encoded string
+*/
+function build_query( $data ) {
+	return _http_build_query( $data, null, '&', '', false );
+}
+/**
+* Retrieve a modified URL query string.
+*
+* You can rebuild the URL and append a new query variable to the URL query by
+* using this function. You can also retrieve the full URL with query data.
+*
+* Adding a single key & value or an associative array. Setting a key value to
+* emptystring removes the key. Omitting oldquery_or_uri uses the $_SERVER
+* value.
+*
+* @since 1.5.0
+*
+* @param mixed $param1 Either newkey or an associative_array
+* @param mixed $param2 Either newvalue or oldquery or uri
+* @param mixed $param3 Optional. Old query or uri
+* @return string New URL query string.
+*/
+function add_query_arg() {
+	$ret = '';
+	if ( is_array( func_get_arg(0) ) ) {
+		if ( @func_num_args() < 2 || false === @func_get_arg( 1 ) )
+			$uri = $_SERVER['REQUEST_URI'];
+		else
+			$uri = @func_get_arg( 1 );
+	} else {
+		if ( @func_num_args() < 3 || false === @func_get_arg( 2 ) )
+			$uri = $_SERVER['REQUEST_URI'];
+		else
+			$uri = @func_get_arg( 2 );
+	}
+	if ( $frag = strstr( $uri, '#' ) )
+		$uri = substr( $uri, 0, -strlen( $frag ) );
+	else
+		$frag = '';
+	if ( preg_match( '|^https?://|i', $uri, $matches ) ) {
+		$protocol = $matches[0];
+		$uri = substr( $uri, strlen( $protocol ) );
+	} else {
+		$protocol = '';
+	}
+	if ( strpos( $uri, '?' ) !== false ) {
+		$parts = explode( '?', $uri, 2 );
+		if ( 1 == count( $parts ) ) {
+			$base = '?';
+			$query = $parts[0];
+		} else {
+			$base = $parts[0] . '?';
+			$query = $parts[1];
+		}
+	} elseif ( !empty( $protocol ) || strpos( $uri, '=' ) === false ) {
+		$base = $uri . '?';
+		$query = '';
+	} else {
+		$base = '';
+		$query = $uri;
+	}
+	wp_parse_str( $query, $qs );
+	$qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string
+	if ( is_array( func_get_arg( 0 ) ) ) {
+		$kayvees = func_get_arg( 0 );
+		$qs = array_merge( $qs, $kayvees );
+	} else {
+		$qs[func_get_arg( 0 )] = func_get_arg( 1 );
+	}
+	foreach ( (array) $qs as $k => $v ) {
+		if ( $v === false )
+			unset( $qs[$k] );
+	}
+	$ret = build_query( $qs );
+	$ret = trim( $ret, '?' );
+	$ret = preg_replace( '#=(&|$)#', '$1', $ret );
+	$ret = $protocol . $base . $ret . $frag;
+	$ret = rtrim( $ret, '?' );
+	return $ret;
+}
+/**
+* Removes an item or list from the query string.
+*
+* @since 1.5.0
+*
+* @param string|array $key Query key or keys to remove.
+* @param bool $query When false uses the $_SERVER value.
+* @return string New URL query string.
+*/
+function remove_query_arg( $key, $query=false ) {
+	if ( is_array( $key ) ) { // removing multiple keys
+		foreach ( $key as $k )
+			$query = add_query_arg( $k, false, $query );
+		return $query;
+	}
+	return add_query_arg( $key, false, $query );
+}
+/**
+* Walks the array while sanitizing the contents.
+*
+* @uses $wpdb Used to sanitize values
+* @since 0.71
+*
+* @param array $array Array to used to walk while sanitizing contents.
+* @return array Sanitized $array.
+*/
+function add_magic_quotes( $array ) {
+	global $wpdb;
+	foreach ( (array) $array as $k => $v ) {
+		if ( is_array( $v ) ) {
+			$array[$k] = add_magic_quotes( $v );
+		} else {
+			$array[$k] = $wpdb->escape( $v );
+		}
+	}
+	return $array;
+}
+/**
+* HTTP request for URI to retrieve content.
+*
+* @since 1.5.1
+* @uses wp_remote_get()
+*
+* @param string $uri URI/URL of web page to retrieve.
+* @return bool|string HTTP content. False on failure.
+*/
+function wp_remote_fopen( $uri ) {
+	$parsed_url = @parse_url( $uri );
+	if ( !$parsed_url || !is_array( $parsed_url ) )
+		return false;
+	$options = array();
+	$options['timeout'] = 10;
+	$response = wp_remote_get( $uri, $options );
+	if ( is_wp_error( $response ) )
+		return false;
+	return $response['body'];
+}
+/**
+* Setup the WordPress query.
+*
+* @since 2.0.0
+*
+* @param string $query_vars Default WP_Query arguments.
+*/
+function wp( $query_vars = '' ) {
+	global $wp, $wp_query, $wp_the_query;
+	$wp->main( $query_vars );
+	if( !isset($wp_the_query) )
+		$wp_the_query = $wp_query;
+}
+/**
+* Retrieve the description for the HTTP status.
+*
+* @since 2.3.0
+*
+* @param int $code HTTP status code.
+* @return string Empty string if not found, or description if found.
+*/
+function get_status_header_desc( $code ) {
+	global $wp_header_to_desc;
+	$code = absint( $code );
+	if ( !isset( $wp_header_to_desc ) ) {
+		$wp_header_to_desc = array(
+			100 => 'Continue',
+			101 => 'Switching Protocols',
+			102 => 'Processing',
+			200 => 'OK',
+			201 => 'Created',
+			202 => 'Accepted',
+			203 => 'Non-Authoritative Information',
+			204 => 'No Content',
+			205 => 'Reset Content',
+			206 => 'Partial Content',
+			207 => 'Multi-Status',
+			226 => 'IM Used',
+			300 => 'Multiple Choices',
+			301 => 'Moved Permanently',
+			302 => 'Found',
+			303 => 'See Other',
+			304 => 'Not Modified',
+			305 => 'Use Proxy',
+			306 => 'Reserved',
+			307 => 'Temporary Redirect',
+			400 => 'Bad Request',
+			401 => 'Unauthorized',
+			402 => 'Payment Required',
+			403 => 'Forbidden',
+			404 => 'Not Found',
+			405 => 'Method Not Allowed',
+			406 => 'Not Acceptable',
+			407 => 'Proxy Authentication Required',
+			408 => 'Request Timeout',
+			409 => 'Conflict',
+			410 => 'Gone',
+			411 => 'Length Required',
+			412 => 'Precondition Failed',
+			413 => 'Request Entity Too Large',
+			414 => 'Request-URI Too Long',
+			415 => 'Unsupported Media Type',
+			416 => 'Requested Range Not Satisfiable',
+			417 => 'Expectation Failed',
+			422 => 'Unprocessable Entity',
+			423 => 'Locked',
+			424 => 'Failed Dependency',
+			426 => 'Upgrade Required',
+			500 => 'Internal Server Error',
+			501 => 'Not Implemented',
+			502 => 'Bad Gateway',
+			503 => 'Service Unavailable',
+			504 => 'Gateway Timeout',
+			505 => 'HTTP Version Not Supported',
+			506 => 'Variant Also Negotiates',
+			507 => 'Insufficient Storage',
+			510 => 'Not Extended'
+		);
+	}
+	if ( isset( $wp_header_to_desc[$code] ) )
+		return $wp_header_to_desc[$code];
+	else
+		return '';
+}
+/**
+* Set HTTP status header.
+*
+* @since 2.0.0
+* @uses apply_filters() Calls 'status_header' on status header string, HTTP
+*		HTTP code, HTTP code description, and protocol string as separate
+*		parameters.
+*
+* @param int $header HTTP status code
+* @return null Does not return anything.
+*/
+function status_header( $header ) {
+	$text = get_status_header_desc( $header );
+	if ( empty( $text ) )
+		return false;
+	$protocol = $_SERVER["SERVER_PROTOCOL"];
+	if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol )
+		$protocol = 'HTTP/1.0';
+	$status_header = "$protocol $header $text";
+	if ( function_exists( 'apply_filters' ) )
+		$status_header = apply_filters( 'status_header', $status_header, $header, $text, $protocol );
+	return @header( $status_header, true, $header );
+}
+/**
+* Gets the header information to prevent caching.
+*
+* The several different headers cover the different ways cache prevention is handled
+* by different browsers
+*
+* @since 2.8
+*
+* @uses apply_filters()
+* @return array The associative array of header names and field values.
+*/
+function wp_get_nocache_headers() {
+	$headers = array(
+		'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT',
+		'Last-Modified' => gmdate( 'D, d M Y H:i:s' ) . ' GMT',
+		'Cache-Control' => 'no-cache, must-revalidate, max-age=0',
+		'Pragma' => 'no-cache',
+	);
+	if ( function_exists('apply_filters') ) {
+		$headers = apply_filters('nocache_headers', $headers);
+	}
+	return $headers;
+}
+/**
+* Sets the headers to prevent caching for the different browsers.
+*
+* Different browsers support different nocache headers, so several headers must
+* be sent so that all of them get the point that no caching should occur.
+*
+* @since 2.0.0
+* @uses wp_get_nocache_headers()
+*/
+function nocache_headers() {
+	$headers = wp_get_nocache_headers();
+	foreach( (array) $headers as $name => $field_value )
+		@header("{$name}: {$field_value}");
+}
+/**
+* Set the headers for caching for 10 days with JavaScript content type.
+*
+* @since 2.1.0
+*/
+function cache_javascript_headers() {
+	$expiresOffset = 864000; // 10 days
+	header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) );
+	header( "Vary: Accept-Encoding" ); // Handle proxies
+	header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" );
+}
+/**
+* Retrieve the number of database queries during the WordPress execution.
+*
+* @since 2.0.0
+*
+* @return int Number of database queries
+*/
+function get_num_queries() {
+	global $wpdb;
+	return $wpdb->num_queries;
+}
+/**
+* Whether input is yes or no. Must be 'y' to be true.
+*
+* @since 1.0.0
+*
+* @param string $yn Character string containing either 'y' or 'n'
+* @return bool True if yes, false on anything else
+*/
+function bool_from_yn( $yn ) {
+	return ( strtolower( $yn ) == 'y' );
+}
+/**
+* Loads the feed template from the use of an action hook.
+*
+* If the feed action does not have a hook, then the function will die with a
+* message telling the visitor that the feed is not valid.
+*
+* It is better to only have one hook for each feed.
+*
+* @since 2.1.0
+* @uses $wp_query Used to tell if the use a comment feed.
+* @uses do_action() Calls 'do_feed_$feed' hook, if a hook exists for the feed.
+*/
+function do_feed() {
+	global $wp_query;
+	$feed = get_query_var( 'feed' );
+	// Remove the pad, if present.
+	$feed = preg_replace( '/^_+/', '', $feed );
+	if ( $feed == '' || $feed == 'feed' )
+		$feed = get_default_feed();
+	$hook = 'do_feed_' . $feed;
+	if ( !has_action($hook) ) {
+		$message = sprintf( __( 'ERROR: %s is not a valid feed template' ), esc_html($feed));
+		wp_die($message);
+	}
+	do_action( $hook, $wp_query->is_comment_feed );
+}
+/**
+* Load the RDF RSS 0.91 Feed template.
+*
+* @since 2.1.0
+*/
+function do_feed_rdf() {
+	load_template( ABSPATH . WPINC . '/feed-rdf.php' );
+}
+/**
+* Load the RSS 1.0 Feed Template
+*
+* @since 2.1.0
+*/
+function do_feed_rss() {
+	load_template( ABSPATH . WPINC . '/feed-rss.php' );
+}
+/**
+* Load either the RSS2 comment feed or the RSS2 posts feed.
+*
+* @since 2.1.0
+*
+* @param bool $for_comments True for the comment feed, false for normal feed.
+*/
+function do_feed_rss2( $for_comments ) {
+	if ( $for_comments )
+		load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' );
+	else
+		load_template( ABSPATH . WPINC . '/feed-rss2.php' );
+}
+/**
+* Load either Atom comment feed or Atom posts feed.
+*
+* @since 2.1.0
+*
+* @param bool $for_comments True for the comment feed, false for normal feed.
+*/
+function do_feed_atom( $for_comments ) {
+	if ($for_comments)
+		load_template( ABSPATH . WPINC . '/feed-atom-comments.php');
+	else
+		load_template( ABSPATH . WPINC . '/feed-atom.php' );
+}
+/**
+* Display the robot.txt file content.
+*
+* The echo content should be with usage of the permalinks or for creating the
+* robot.txt file.
+*
+* @since 2.1.0
+* @uses do_action() Calls 'do_robotstxt' hook for displaying robot.txt rules.
+*/
+function do_robots() {
+	header( 'Content-Type: text/plain; charset=utf-8' );
+	do_action( 'do_robotstxt' );
+	if ( '0' == get_option( 'blog_public' ) ) {
+		echo "User-agent: *\n";
+		echo "Disallow: /\n";
+	} else {
+		echo "User-agent: *\n";
+		echo "Disallow:\n";
+	}
+}
+/**
+* Test whether blog is already installed.
+*
+* The cache will be checked first. If you have a cache plugin, which saves the
+* cache values, then this will work. If you use the default WordPress cache,
+* and the database goes away, then you might have problems.
+*
+* Checks for the option siteurl for whether WordPress is installed.
+*
+* @since 2.1.0
+* @uses $wpdb
+*
+* @return bool Whether blog is already installed.
+*/
+function is_blog_installed() {
+	global $wpdb;
+	// Check cache first. If options table goes away and we have true cached, oh well.
+	if ( wp_cache_get( 'is_blog_installed' ) )
+		return true;
+	$suppress = $wpdb->suppress_errors();
+	$alloptions = wp_load_alloptions();
+	// If siteurl is not set to autoload, check it specifically
+	if ( !isset( $alloptions['siteurl'] ) )
+		$installed = $wpdb->get_var( "SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl'" );
+	else
+		$installed = $alloptions['siteurl'];
+	$wpdb->suppress_errors( $suppress );
+	$installed = !empty( $installed );
+	wp_cache_set( 'is_blog_installed', $installed );
+	return $installed;
+}
+/**
+* Retrieve URL with nonce added to URL query.
+*
+* @package WordPress
+* @subpackage Security
+* @since 2.0.4
+*
+* @param string $actionurl URL to add nonce action
+* @param string $action Optional. Nonce action name
+* @return string URL with nonce action added.
+*/
+function wp_nonce_url( $actionurl, $action = -1 ) {
+	$actionurl = str_replace( '&amp;', '&', $actionurl );
+	return esc_html( add_query_arg( '_wpnonce', wp_create_nonce( $action ), $actionurl ) );
+}
+/**
+* Retrieve or display nonce hidden field for forms.
+*
+* The nonce field is used to validate that the contents of the form came from
+* the location on the current site and not somewhere else. The nonce does not
+* offer absolute protection, but should protect against most cases. It is very
+* important to use nonce field in forms.
+*
+* If you set $echo to true and set $referer to true, then you will need to
+* retrieve the {@link wp_referer_field() wp referer field}. If you have the
+* $referer set to true and are echoing the nonce field, it will also echo the
+* referer field.
+*
+* The $action and $name are optional, but if you want to have better security,
+* it is strongly suggested to set those two parameters. It is easier to just
+* call the function without any parameters, because validation of the nonce
+* doesn't require any parameters, but since crackers know what the default is
+* it won't be difficult for them to find a way around your nonce and cause
+* damage.
+*
+* The input name will be whatever $name value you gave. The input value will be
+* the nonce creation value.
+*
+* @package WordPress
+* @subpackage Security
+* @since 2.0.4
+*
+* @param string $action Optional. Action name.
+* @param string $name Optional. Nonce name.
+* @param bool $referer Optional, default true. Whether to set the referer field for validation.
+* @param bool $echo Optional, default true. Whether to display or return hidden form field.
+* @return string Nonce field.
+*/
+function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true , $echo = true ) {
+	$name = esc_attr( $name );
+	$nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />';
+	if ( $echo )
+		echo $nonce_field;
+	if ( $referer )
+		wp_referer_field( $echo, 'previous' );
+	return $nonce_field;
+}
+/**
+* Retrieve or display referer hidden field for forms.
+*
+* The referer link is the current Request URI from the server super global. The
+* input name is '_wp_http_referer', in case you wanted to check manually.
+*
+* @package WordPress
+* @subpackage Security
+* @since 2.0.4
+*
+* @param bool $echo Whether to echo or return the referer field.
+* @return string Referer field.
+*/
+function wp_referer_field( $echo = true) {
+	$ref = esc_attr( $_SERVER['REQUEST_URI'] );
+	$referer_field = '<input type="hidden" name="_wp_http_referer" value="'. $ref . '" />';
+	if ( $echo )
+		echo $referer_field;
+	return $referer_field;
+}
+/**
+* Retrieve or display original referer hidden field for forms.
+*
+* The input name is '_wp_original_http_referer' and will be either the same
+* value of {@link wp_referer_field()}, if that was posted already or it will
+* be the current page, if it doesn't exist.
+*
+* @package WordPress
+* @subpackage Security
+* @since 2.0.4
+*
+* @param bool $echo Whether to echo the original http referer
+* @param string $jump_back_to Optional, default is 'current'. Can be 'previous' or page you want to jump back to.
+* @return string Original referer field.
+*/
+function wp_original_referer_field( $echo = true, $jump_back_to = 'current' ) {
+	$jump_back_to = ( 'previous' == $jump_back_to ) ? wp_get_referer() : $_SERVER['REQUEST_URI'];
+	$ref = ( wp_get_original_referer() ) ? wp_get_original_referer() : $jump_back_to;
+	$orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr( stripslashes( $ref ) ) . '" />';
+	if ( $echo )
+		echo $orig_referer_field;
+	return $orig_referer_field;
+}
+/**
+* Retrieve referer from '_wp_http_referer', HTTP referer, or current page respectively.
+*
+* @package WordPress
+* @subpackage Security
+* @since 2.0.4
+*
+* @return string|bool False on failure. Referer URL on success.
+*/
+function wp_get_referer() {
+	$ref = '';
+	if ( ! empty( $_REQUEST['_wp_http_referer'] ) )
+		$ref = $_REQUEST['_wp_http_referer'];
+	else if ( ! empty( $_SERVER['HTTP_REFERER'] ) )
+		$ref = $_SERVER['HTTP_REFERER'];
+	if ( $ref !== $_SERVER['REQUEST_URI'] )
+		return $ref;
+	return false;
+}
+/**
+* Retrieve original referer that was posted, if it exists.
+*
+* @package WordPress
+* @subpackage Security
+* @since 2.0.4
+*
+* @return string|bool False if no original referer or original referer if set.
+*/
+function wp_get_original_referer() {
+	if ( !empty( $_REQUEST['_wp_original_http_referer'] ) )
+		return $_REQUEST['_wp_original_http_referer'];
+	return false;
+}
+/**
+* Recursive directory creation based on full path.
+*
+* Will attempt to set permissions on folders.
+*
+* @since 2.0.1
+*
+* @param string $target Full path to attempt to create.
+* @return bool Whether the path was created or not. True if path already exists.
+*/
+function wp_mkdir_p( $target ) {
+	// from php.net/mkdir user contributed notes
+	$target = str_replace( '//', '/', $target );
+	if ( file_exists( $target ) )
+		return @is_dir( $target );
+	// Attempting to create the directory may clutter up our display.
+	if ( @mkdir( $target ) ) {
+		$stat = @stat( dirname( $target ) );
+		$dir_perms = $stat['mode'] & 0007777;  // Get the permission bits.
+		@chmod( $target, $dir_perms );
+		return true;
+	} elseif ( is_dir( dirname( $target ) ) ) {
+			return false;
+	}
+	// If the above failed, attempt to create the parent node, then try again.
+	if ( ( $target != '/' ) && ( wp_mkdir_p( dirname( $target ) ) ) )
+		return wp_mkdir_p( $target );
+	return false;
+}
+/**
+* Test if a give filesystem path is absolute ('/foo/bar', 'c:\windows').
+*
+* @since 2.5.0
+*
+* @param string $path File path
+* @return bool True if path is absolute, false is not absolute.
+*/
+function path_is_absolute( $path ) {
+	// this is definitive if true but fails if $path does not exist or contains a symbolic link
+	if ( realpath($path) == $path )
+		return true;
+	if ( strlen($path) == 0 || $path{0} == '.' )
+		return false;
+	// windows allows absolute paths like this
+	if ( preg_match('#^[a-zA-Z]:\\\\#', $path) )
+		return true;
+	// a path starting with / or \ is absolute; anything else is relative
+	return (bool) preg_match('#^[/\\\\]#', $path);
+}
+/**
+* Join two filesystem paths together (e.g. 'give me $path relative to $base').
+*
+* If the $path is absolute, then it the full path is returned.
+*
+* @since 2.5.0
+*
+* @param string $base
+* @param string $path
+* @return string The path with the base or absolute path.
+*/
+function path_join( $base, $path ) {
+	if ( path_is_absolute($path) )
+		return $path;
+	return rtrim($base, '/') . '/' . ltrim($path, '/');
+}
+/**
+* Get an array containing the current upload directory's path and url.
+*
+* Checks the 'upload_path' option, which should be from the web root folder,
+* and if it isn't empty it will be used. If it is empty, then the path will be
+* 'WP_CONTENT_DIR/uploads'. If the 'UPLOADS' constant is defined, then it will
+* override the 'upload_path' option and 'WP_CONTENT_DIR/uploads' path.
+*
+* The upload URL path is set either by the 'upload_url_path' option or by using
+* the 'WP_CONTENT_URL' constant and appending '/uploads' to the path.
+*
+* If the 'uploads_use_yearmonth_folders' is set to true (checkbox if checked in
+* the administration settings panel), then the time will be used. The format
+* will be year first and then month.
+*
+* If the path couldn't be created, then an error will be returned with the key
+* 'error' containing the error message. The error suggests that the parent
+* directory is not writable by the server.
+*
+* On success, the returned array will have many indices:
+* 'path' - base directory and sub directory or full path to upload directory.
+* 'url' - base url and sub directory or absolute URL to upload directory.
+* 'subdir' - sub directory if uploads use year/month folders option is on.
+* 'basedir' - path without subdir.
+* 'baseurl' - URL path without subdir.
+* 'error' - set to false.
+*
+* @since 2.0.0
+* @uses apply_filters() Calls 'upload_dir' on returned array.
+*
+* @param string $time Optional. Time formatted in 'yyyy/mm'.
+* @return array See above for description.
+*/
+function wp_upload_dir( $time = null ) {
+	$siteurl = get_option( 'siteurl' );
+	$upload_path = get_option( 'upload_path' );
+	$upload_path = trim($upload_path);
+	if ( empty($upload_path) )
+		$dir = WP_CONTENT_DIR . '/uploads';
+	else
+		$dir = $upload_path;
+	// $dir is absolute, $path is (maybe) relative to ABSPATH
+	$dir = path_join( ABSPATH, $dir );
+	if ( !$url = get_option( 'upload_url_path' ) ) {
+		if ( empty($upload_path) or ( $upload_path == $dir ) )
+			$url = WP_CONTENT_URL . '/uploads';
+		else
+			$url = trailingslashit( $siteurl ) . $upload_path;
+	}
+	if ( defined('UPLOADS') ) {
+		$dir = ABSPATH . UPLOADS;
+		$url = trailingslashit( $siteurl ) . UPLOADS;
+	}
+	$bdir = $dir;
+	$burl = $url;
+	$subdir = '';
+	if ( get_option( 'uploads_use_yearmonth_folders' ) ) {
+		// Generate the yearly and monthly dirs
+		if ( !$time )
+			$time = current_time( 'mysql' );
+		$y = substr( $time, 0, 4 );
+		$m = substr( $time, 5, 2 );
+		$subdir = "/$y/$m";
+	}
+	$dir .= $subdir;
+	$url .= $subdir;
+	$uploads = apply_filters( 'upload_dir', array( 'path' => $dir, 'url' => $url, 'subdir' => $subdir, 'basedir' => $bdir, 'baseurl' => $burl, 'error' => false ) );
+	// Make sure we have an uploads dir
+	if ( ! wp_mkdir_p( $uploads['path'] ) ) {
+		$message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $uploads['path'] );
+		return array( 'error' => $message );
+	}
+	return $uploads;
+}
+/**
+* Get a filename that is sanitized and unique for the given directory.
+*
+* If the filename is not unique, then a number will be added to the filename
+* before the extension, and will continue adding numbers until the filename is
+* unique.
+*
+* The callback must accept two parameters, the first one is the directory and
+* the second is the filename. The callback must be a function.
+*
+* @since 2.5
+*
+* @param string $dir
+* @param string $filename
+* @param string $unique_filename_callback Function name, must be a function.
+* @return string New filename, if given wasn't unique.
+*/
+function wp_unique_filename( $dir, $filename, $unique_filename_callback = null ) {
+	// sanitize the file name before we begin processing
+	$filename = sanitize_file_name($filename);
+	// separate the filename into a name and extension
+	$info = pathinfo($filename);
+	$ext = !empty($info['extension']) ? $info['extension'] : '';
+	$name = basename($filename, ".{$ext}");
+	// edge case: if file is named '.ext', treat as an empty name
+	if( $name === ".$ext" )
+		$name = '';
+	// Increment the file number until we have a unique file to save in $dir. Use $override['unique_filename_callback'] if supplied.
+	if ( $unique_filename_callback && function_exists( $unique_filename_callback ) ) {
+		$filename = $unique_filename_callback( $dir, $name );
+	} else {
+		$number = '';
+		if ( !empty( $ext ) )
+			$ext = ".$ext";
+		while ( file_exists( $dir . "/$filename" ) ) {
+			if ( '' == "$number$ext" )
+				$filename = $filename . ++$number . $ext;
+			else
+				$filename = str_replace( "$number$ext", ++$number . $ext, $filename );
+		}
+	}
+	return $filename;
+}
+/**
+* Create a file in the upload folder with given content.
+*
+* If there is an error, then the key 'error' will exist with the error message.
+* If success, then the key 'file' will have the unique file path, the 'url' key
+* will have the link to the new file. and the 'error' key will be set to false.
+*
+* This function will not move an uploaded file to the upload folder. It will
+* create a new file with the content in $bits parameter. If you move the upload
+* file, read the content of the uploaded file, and then you can give the
+* filename and content to this function, which will add it to the upload
+* folder.
+*
+* The permissions will be set on the new file automatically by this function.
+*
+* @since 2.0.0
+*
+* @param string $name
+* @param null $deprecated Not used. Set to null.
+* @param mixed $bits File content
+* @param string $time Optional. Time formatted in 'yyyy/mm'.
+* @return array
+*/
+function wp_upload_bits( $name, $deprecated, $bits, $time = null ) {
+	if ( empty( $name ) )
+		return array( 'error' => __( 'Empty filename' ) );
+	$wp_filetype = wp_check_filetype( $name );
+	if ( !$wp_filetype['ext'] )
+		return array( 'error' => __( 'Invalid file type' ) );
+	$upload = wp_upload_dir( $time );
+	if ( $upload['error'] !== false )
+		return $upload;
+	$filename = wp_unique_filename( $upload['path'], $name );
+	$new_file = $upload['path'] . "/$filename";
+	if ( ! wp_mkdir_p( dirname( $new_file ) ) ) {
+		$message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), dirname( $new_file ) );
+		return array( 'error' => $message );
+	}
+	$ifp = @ fopen( $new_file, 'wb' );
+	if ( ! $ifp )
+		return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) );
+	@fwrite( $ifp, $bits );
+	fclose( $ifp );
+	// Set correct file permissions
+	$stat = @ stat( dirname( $new_file ) );
+	$perms = $stat['mode'] & 0007777;
+	$perms = $perms & 0000666;
+	@ chmod( $new_file, $perms );
+	// Compute the URL
+	$url = $upload['url'] . "/$filename";
+	return array( 'file' => $new_file, 'url' => $url, 'error' => false );
+}
+/**
+* Retrieve the file type based on the extension name.
+*
+* @package WordPress
+* @since 2.5.0
+* @uses apply_filters() Calls 'ext2type' hook on default supported types.
+*
+* @param string $ext The extension to search.
+* @return string|null The file type, example: audio, video, document, spreadsheet, etc. Null if not found.
+*/
+function wp_ext2type( $ext ) {
+	$ext2type = apply_filters('ext2type', array(
+		'audio' => array('aac','ac3','aif','aiff','mp1','mp2','mp3','m3a','m4a','m4b','ogg','ram','wav','wma'),
+		'video' => array('asf','avi','divx','dv','mov','mpg','mpeg','mp4','mpv','ogm','qt','rm','vob','wmv', 'm4v'),
+		'document' => array('doc','docx','pages','odt','rtf','pdf'),
+		'spreadsheet' => array('xls','xlsx','numbers','ods'),
+		'interactive' => array('ppt','pptx','key','odp','swf'),
+		'text' => array('txt'),
+		'archive' => array('tar','bz2','gz','cab','dmg','rar','sea','sit','sqx','zip'),
+		'code' => array('css','html','php','js'),
+	));
+	foreach ( $ext2type as $type => $exts )
+		if ( in_array($ext, $exts) )
+			return $type;
+}
+/**
+* Retrieve the file type from the file name.
+*
+* You can optionally define the mime array, if needed.
+*
+* @since 2.0.4
+*
+* @param string $filename File name or path.
+* @param array $mimes Optional. Key is the file extension with value as the mime type.
+* @return array Values with extension first and mime type.
+*/
+function wp_check_filetype( $filename, $mimes = null ) {
+	if ( empty($mimes) )
+		$mimes = get_allowed_mime_types();
+	$type = false;
+	$ext = false;
+	foreach ( $mimes as $ext_preg => $mime_match ) {
+		$ext_preg = '!\.(' . $ext_preg . ')$!i';
+		if ( preg_match( $ext_preg, $filename, $ext_matches ) ) {
+			$type = $mime_match;
+			$ext = $ext_matches[1];
+			break;
+		}
+	}
+	return compact( 'ext', 'type' );
+}
+/**
+* Retrieve list of allowed mime types and file extensions.
+*
+* @since 2.8.6
+*
+* @return array Array of mime types keyed by the file extension regex corresponding to those types.
+*/
+function get_allowed_mime_types() {
+	static $mimes = false;
+	if ( !$mimes ) {
+		// Accepted MIME types are set here as PCRE unless provided.
+		$mimes = apply_filters( 'upload_mimes', array(
+		'jpg|jpeg|jpe' => 'image/jpeg',
+		'gif' => 'image/gif',
+		'png' => 'image/png',
+		'bmp' => 'image/bmp',
+		'tif|tiff' => 'image/tiff',
+		'ico' => 'image/x-icon',
+		'asf|asx|wax|wmv|wmx' => 'video/asf',
+		'avi' => 'video/avi',
+		'divx' => 'video/divx',
+		'mov|qt' => 'video/quicktime',
+		'mpeg|mpg|mpe' => 'video/mpeg',
+		'txt|c|cc|h' => 'text/plain',
+		'rtx' => 'text/richtext',
+		'css' => 'text/css',
+		'htm|html' => 'text/html',
+		'mp3|m4a' => 'audio/mpeg',
+		'mp4|m4v' => 'video/mp4',
+		'ra|ram' => 'audio/x-realaudio',
+		'wav' => 'audio/wav',
+		'ogg' => 'audio/ogg',
+		'mid|midi' => 'audio/midi',
+		'wma' => 'audio/wma',
+		'rtf' => 'application/rtf',
+		'js' => 'application/javascript',
+		'pdf' => 'application/pdf',
+		'doc|docx' => 'application/msword',
+		'pot|pps|ppt|pptx' => 'application/vnd.ms-powerpoint',
+		'wri' => 'application/vnd.ms-write',
+		'xla|xls|xlsx|xlt|xlw' => 'application/vnd.ms-excel',
+		'mdb' => 'application/vnd.ms-access',
+		'mpp' => 'application/vnd.ms-project',
+		'swf' => 'application/x-shockwave-flash',
+		'class' => 'application/java',
+		'tar' => 'application/x-tar',
+		'zip' => 'application/zip',
+		'gz|gzip' => 'application/x-gzip',
+		'exe' => 'application/x-msdownload',
+		// openoffice formats
+		'odt' => 'application/vnd.oasis.opendocument.text',
+		'odp' => 'application/vnd.oasis.opendocument.presentation',
+		'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
+		'odg' => 'application/vnd.oasis.opendocument.graphics',
+		'odc' => 'application/vnd.oasis.opendocument.chart',
+		'odb' => 'application/vnd.oasis.opendocument.database',
+		'odf' => 'application/vnd.oasis.opendocument.formula',
+		) );
+	}
+	return $mimes;
+}
+/**
+* Retrieve nonce action "Are you sure" message.
+*
+* The action is split by verb and noun. The action format is as follows:
+* verb-action_extra. The verb is before the first dash and has the format of
+* letters and no spaces and numbers. The noun is after the dash and before the
+* underscore, if an underscore exists. The noun is also only letters.
+*
+* The filter will be called for any action, which is not defined by WordPress.
+* You may use the filter for your plugin to explain nonce actions to the user,
+* when they get the "Are you sure?" message. The filter is in the format of
+* 'explain_nonce_$verb-$noun' with the $verb replaced by the found verb and the
+* $noun replaced by the found noun. The two parameters that are given to the
+* hook are the localized "Are you sure you want to do this?" message with the
+* extra text (the text after the underscore).
+*
+* @package WordPress
+* @subpackage Security
+* @since 2.0.4
+*
+* @param string $action Nonce action.
+* @return string Are you sure message.
+*/
+function wp_explain_nonce( $action ) {
+	if ( $action !== -1 && preg_match( '/([a-z]+)-([a-z]+)(_(.+))?/', $action, $matches ) ) {
+		$verb = $matches[1];
+		$noun = $matches[2];
+		$trans = array();
+		$trans['update']['attachment'] = array( __( 'Your attempt to edit this attachment: &#8220;%s&#8221; has failed.' ), 'get_the_title' );
+		$trans['add']['category']      = array( __( 'Your attempt to add this category has failed.' ), false );
+		$trans['delete']['category']   = array( __( 'Your attempt to delete this category: &#8220;%s&#8221; has failed.' ), 'get_cat_name' );
+		$trans['update']['category']   = array( __( 'Your attempt to edit this category: &#8220;%s&#8221; has failed.' ), 'get_cat_name' );
+		$trans['delete']['comment']    = array( __( 'Your attempt to delete this comment: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['unapprove']['comment'] = array( __( 'Your attempt to unapprove this comment: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['approve']['comment']   = array( __( 'Your attempt to approve this comment: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['update']['comment']    = array( __( 'Your attempt to edit this comment: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['bulk']['comments']     = array( __( 'Your attempt to bulk modify comments has failed.' ), false );
+		$trans['moderate']['comments'] = array( __( 'Your attempt to moderate comments has failed.' ), false );
+		$trans['add']['bookmark']      = array( __( 'Your attempt to add this link has failed.' ), false );
+		$trans['delete']['bookmark']   = array( __( 'Your attempt to delete this link: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['update']['bookmark']   = array( __( 'Your attempt to edit this link: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['bulk']['bookmarks']    = array( __( 'Your attempt to bulk modify links has failed.' ), false );
+		$trans['add']['page']          = array( __( 'Your attempt to add this page has failed.' ), false );
+		$trans['delete']['page']       = array( __( 'Your attempt to delete this page: &#8220;%s&#8221; has failed.' ), 'get_the_title' );
+		$trans['update']['page']       = array( __( 'Your attempt to edit this page: &#8220;%s&#8221; has failed.' ), 'get_the_title' );
+		$trans['edit']['plugin']       = array( __( 'Your attempt to edit this plugin file: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['activate']['plugin']   = array( __( 'Your attempt to activate this plugin: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['deactivate']['plugin'] = array( __( 'Your attempt to deactivate this plugin: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['upgrade']['plugin']    = array( __( 'Your attempt to upgrade this plugin: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['add']['post']          = array( __( 'Your attempt to add this post has failed.' ), false );
+		$trans['delete']['post']       = array( __( 'Your attempt to delete this post: &#8220;%s&#8221; has failed.' ), 'get_the_title' );
+		$trans['update']['post']       = array( __( 'Your attempt to edit this post: &#8220;%s&#8221; has failed.' ), 'get_the_title' );
+		$trans['add']['user']          = array( __( 'Your attempt to add this user has failed.' ), false );
+		$trans['delete']['users']      = array( __( 'Your attempt to delete users has failed.' ), false );
+		$trans['bulk']['users']        = array( __( 'Your attempt to bulk modify users has failed.' ), false );
+		$trans['update']['user']       = array( __( 'Your attempt to edit this user: &#8220;%s&#8221; has failed.' ), 'get_the_author_meta', 'display_name' );
+		$trans['update']['profile']    = array( __( 'Your attempt to modify the profile for: &#8220;%s&#8221; has failed.' ), 'get_the_author_meta', 'display_name' );
+		$trans['update']['options']    = array( __( 'Your attempt to edit your settings has failed.' ), false );
+		$trans['update']['permalink']  = array( __( 'Your attempt to change your permalink structure to: %s has failed.' ), 'use_id' );
+		$trans['edit']['file']         = array( __( 'Your attempt to edit this file: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['edit']['theme']        = array( __( 'Your attempt to edit this theme file: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['switch']['theme']      = array( __( 'Your attempt to switch to this theme: &#8220;%s&#8221; has failed.' ), 'use_id' );
+		$trans['log']['out']           = array( sprintf( __( 'You are attempting to log out of %s' ), get_bloginfo( 'sitename' ) ), false );
+		if ( isset( $trans[$verb][$noun] ) ) {
+			if ( !empty( $trans[$verb][$noun][1] ) ) {
+				$lookup = $trans[$verb][$noun][1];
+				if ( isset($trans[$verb][$noun][2]) )
+					$lookup_value = $trans[$verb][$noun][2];
+				$object = $matches[4];
+				if ( 'use_id' != $lookup ) {
+					if ( isset( $lookup_value ) )
+						$object = call_user_func( $lookup, $lookup_value, $object );
+					else
+						$object = call_user_func( $lookup, $object );
+				}
+				return sprintf( $trans[$verb][$noun][0], esc_html($object) );
+			} else {
+				return $trans[$verb][$noun][0];
+			}
+		}
+		return apply_filters( 'explain_nonce_' . $verb . '-' . $noun, __( 'Are you sure you want to do this?' ), $matches[4] );
+	} else {
+		return apply_filters( 'explain_nonce_' . $action, __( 'Are you sure you want to do this?' ) );
+	}
+}
+/**
+* Display "Are You Sure" message to confirm the action being taken.
+*
+* If the action has the nonce explain message, then it will be displayed along
+* with the "Are you sure?" message.
+*
+* @package WordPress
+* @subpackage Security
+* @since 2.0.4
+*
+* @param string $action The nonce action.
+*/
+function wp_nonce_ays( $action ) {
+	$title = __( 'WordPress Failure Notice' );
+	$html = esc_html( wp_explain_nonce( $action ) );
+	if ( wp_get_referer() )
+		$html .= "</p><p><a href='" . esc_url( remove_query_arg( 'updated', wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>";
+	elseif ( 'log-out' == $action )
+		$html .= "</p><p>" . sprintf( __( "Do you really want to <a href='%s'>log out</a>?"), wp_logout_url() );
+	wp_die( $html, $title);
+}
+/**
+* Kill WordPress execution and display HTML message with error message.
+*
+* Call this function complements the die() PHP function. The difference is that
+* HTML will be displayed to the user. It is recommended to use this function
+* only, when the execution should not continue any further. It is not
+* recommended to call this function very often and try to handle as many errors
+* as possible siliently.
+*
+* @since 2.0.4
+*
+* @param string $message Error message.
+* @param string $title Error title.
+* @param string|array $args Optional arguements to control behaviour.
+*/
+function wp_die( $message, $title = '', $args = array() ) {
+	global $wp_locale;
+	$defaults = array( 'response' => 500 );
+	$r = wp_parse_args($args, $defaults);
+	$have_gettext = function_exists('__');
+	if ( function_exists( 'is_wp_error' ) && is_wp_error( $message ) ) {
+		if ( empty( $title ) ) {
+			$error_data = $message->get_error_data();
+			if ( is_array( $error_data ) && isset( $error_data['title'] ) )
+				$title = $error_data['title'];
+		}
+		$errors = $message->get_error_messages();
+		switch ( count( $errors ) ) :
+		case 0 :
+			$message = '';
+			break;
+		case 1 :
+			$message = "<p>{$errors[0]}</p>";
+			break;
+		default :
+			$message = "<ul>\n\t\t<li>" . join( "</li>\n\t\t<li>", $errors ) . "</li>\n\t</ul>";
+			break;
+		endswitch;
+	} elseif ( is_string( $message ) ) {
+		$message = "<p>$message</p>";
+	}
+	if ( isset( $r['back_link'] ) && $r['back_link'] ) {
+		$back_text = $have_gettext? __('&laquo; Back') : '&laquo; Back';
+		$message .= "\n<p><a href='javascript:history.back()'>$back_text</p>";
+	}
+	if ( defined( 'WP_SITEURL' ) && '' != WP_SITEURL )
+		$admin_dir = WP_SITEURL . '/wp-admin/';
+	elseif ( function_exists( 'get_bloginfo' ) && '' != get_bloginfo( 'wpurl' ) )
+		$admin_dir = get_bloginfo( 'wpurl' ) . '/wp-admin/';
+	elseif ( strpos( $_SERVER['PHP_SELF'], 'wp-admin' ) !== false )
+		$admin_dir = '';
+	else
+		$admin_dir = 'wp-admin/';
+	if ( !function_exists( 'did_action' ) || !did_action( 'admin_head' ) ) :
+	if( !headers_sent() ){
+		status_header( $r['response'] );
+		nocache_headers();
+		header( 'Content-Type: text/html; charset=utf-8' );
+	}
+	if ( empty($title) ) {
+		$title = $have_gettext? __('WordPress &rsaquo; Error') : 'WordPress &rsaquo; Error';
+	}
+	$text_direction = 'ltr';
+	if ( isset($r['text_direction']) && $r['text_direction'] == 'rtl' ) $text_direction = 'rtl';
+	if ( ( $wp_locale ) && ( 'rtl' == $wp_locale->text_direction ) ) $text_direction = 'rtl';
+?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) ) language_attributes(); ?>>
+<head>
+	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+	<title><?php echo $title ?></title>
+	<link rel="stylesheet" href="<?php echo $admin_dir; ?>css/install.css" type="text/css" />
+<?php
+if ( 'rtl' == $text_direction ) : ?>
+	<link rel="stylesheet" href="<?php echo $admin_dir; ?>css/install-rtl.css" type="text/css" />
+<?php endif; ?>
+</head>
+<body id="error-page">
+<?php endif; ?>
+	<?php echo $message; ?>
+</body>
+<!-- Ticket #8942, IE bug fix: always pad the error page with enough characters such that it is greater than 512 bytes, even after gzip compression abcdefghijklmnopqrstuvwxyz1234567890aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz11223344556677889900abacbcbdcdcededfefegfgfhghgihihjijikjkjlklkmlmlnmnmononpopoqpqprqrqsrsrtstsubcbcdcdedefefgfabcadefbghicjkldmnoepqrfstugvwxhyz1i234j567k890laabmbccnddeoeffpgghqhiirjjksklltmmnunoovppqwqrrxsstytuuzvvw0wxx1yyz2z113223434455666777889890091abc2def3ghi4jkl5mno6pqr7stu8vwx9yz11aab2bcc3dd4ee5ff6gg7hh8ii9j0jk1kl2lmm3nnoo4p5pq6qrr7ss8tt9uuvv0wwx1x2yyzz13aba4cbcb5dcdc6dedfef8egf9gfh0ghg1ihi2hji3jik4jkj5lkl6kml7mln8mnm9ono -->
+</html>
+<?php
+	die();
+}
+/**
+* Retrieve the WordPress home page URL.
+*
+* If the constant named 'WP_HOME' exists, then it willl be used and returned by
+* the function. This can be used to counter the redirection on your local
+* development environment.
+*
+* @access private
+* @package WordPress
+* @since 2.2.0
+*
+* @param string $url URL for the home location
+* @return string Homepage location.
+*/
+function _config_wp_home( $url = '' ) {
+	if ( defined( 'WP_HOME' ) )
+		return WP_HOME;
+	return $url;
+}
+/**
+* Retrieve the WordPress site URL.
+*
+* If the constant named 'WP_SITEURL' is defined, then the value in that
+* constant will always be returned. This can be used for debugging a site on
+* your localhost while not having to change the database to your URL.
+*
+* @access private
+* @package WordPress
+* @since 2.2.0
+*
+* @param string $url URL to set the WordPress site location.
+* @return string The WordPress Site URL
+*/
+function _config_wp_siteurl( $url = '' ) {
+	if ( defined( 'WP_SITEURL' ) )
+		return WP_SITEURL;
+	return $url;
+}
+/**
+* Set the localized direction for MCE plugin.
+*
+* Will only set the direction to 'rtl', if the WordPress locale has the text
+* direction set to 'rtl'.
+*
+* Fills in the 'directionality', 'plugins', and 'theme_advanced_button1' array
+* keys. These keys are then returned in the $input array.
+*
+* @access private
+* @package WordPress
+* @subpackage MCE
+* @since 2.1.0
+*
+* @param array $input MCE plugin array.
+* @return array Direction set for 'rtl', if needed by locale.
+*/
+function _mce_set_direction( $input ) {
+	global $wp_locale;
+	if ( 'rtl' == $wp_locale->text_direction ) {
+		$input['directionality'] = 'rtl';
+		$input['plugins'] .= ',directionality';
+		$input['theme_advanced_buttons1'] .= ',ltr';
+	}
+	return $input;
+}
+/**
+* Convert smiley code to the icon graphic file equivalent.
+*
+* You can turn off smilies, by going to the write setting screen and unchecking
+* the box, or by setting 'use_smilies' option to false or removing the option.
+*
+* Plugins may override the default smiley list by setting the $wpsmiliestrans
+* to an array, with the key the code the blogger types in and the value the
+* image file.
+*
+* The $wp_smiliessearch global is for the regular expression and is set each
+* time the function is called.
+*
+* The full list of smilies can be found in the function and won't be listed in
+* the description. Probably should create a Codex page for it, so that it is
+* available.
+*
+* @global array $wpsmiliestrans
+* @global array $wp_smiliessearch
+* @since 2.2.0
+*/
+function smilies_init() {
+	global $wpsmiliestrans, $wp_smiliessearch;
+	// don't bother setting up smilies if they are disabled
+	if ( !get_option( 'use_smilies' ) )
+		return;
+	if ( !isset( $wpsmiliestrans ) ) {
+		$wpsmiliestrans = array(
+		':mrgreen:' => 'icon_mrgreen.gif',
+		':neutral:' => 'icon_neutral.gif',
+		':twisted:' => 'icon_twisted.gif',
+		  ':arrow:' => 'icon_arrow.gif',
+		  ':shock:' => 'icon_eek.gif',
+		  ':smile:' => 'icon_smile.gif',
+		    ':???:' => 'icon_confused.gif',
+		   ':cool:' => 'icon_cool.gif',
+		   ':evil:' => 'icon_evil.gif',
+		   ':grin:' => 'icon_biggrin.gif',
+		   ':idea:' => 'icon_idea.gif',
+		   ':oops:' => 'icon_redface.gif',
+		   ':razz:' => 'icon_razz.gif',
+		   ':roll:' => 'icon_rolleyes.gif',
+		   ':wink:' => 'icon_wink.gif',
+		    ':cry:' => 'icon_cry.gif',
+		    ':eek:' => 'icon_surprised.gif',
+		    ':lol:' => 'icon_lol.gif',
+		    ':mad:' => 'icon_mad.gif',
+		    ':sad:' => 'icon_sad.gif',
+		      '8-)' => 'icon_cool.gif',
+		      '8-O' => 'icon_eek.gif',
+		      ':-(' => 'icon_sad.gif',
+		      ':-)' => 'icon_smile.gif',
+		      ':-?' => 'icon_confused.gif',
+		      ':-D' => 'icon_biggrin.gif',
+		      ':-P' => 'icon_razz.gif',
+		      ':-o' => 'icon_surprised.gif',
+		      ':-x' => 'icon_mad.gif',
+		      ':-|' => 'icon_neutral.gif',
+		      ';-)' => 'icon_wink.gif',
+		       '8)' => 'icon_cool.gif',
+		       '8O' => 'icon_eek.gif',
+		       ':(' => 'icon_sad.gif',
+		       ':)' => 'icon_smile.gif',
+		       ':?' => 'icon_confused.gif',
+		       ':D' => 'icon_biggrin.gif',
+		       ':P' => 'icon_razz.gif',
+		       ':o' => 'icon_surprised.gif',
+		       ':x' => 'icon_mad.gif',
+		       ':|' => 'icon_neutral.gif',
+		       ';)' => 'icon_wink.gif',
+		      ':!:' => 'icon_exclaim.gif',
+		      ':?:' => 'icon_question.gif',
+		);
+	}
+	if (count($wpsmiliestrans) == 0) {
+		return;
+	}
+	/*
+	 * NOTE: we sort the smilies in reverse key order. This is to make sure
+	 * we match the longest possible smilie (:???: vs :?) as the regular
+	 * expression used below is first-match
+	 */
+	krsort($wpsmiliestrans);
+	$wp_smiliessearch = '/(?:\s|^)';
+	$subchar = '';
+	foreach ( (array) $wpsmiliestrans as $smiley => $img ) {
+		$firstchar = substr($smiley, 0, 1);
+		$rest = substr($smiley, 1);
+		// new subpattern?
+		if ($firstchar != $subchar) {
+			if ($subchar != '') {
+				$wp_smiliessearch .= ')|(?:\s|^)';
+			}
+			$subchar = $firstchar;
+			$wp_smiliessearch .= preg_quote($firstchar, '/') . '(?:';
+		} else {
+			$wp_smiliessearch .= '|';
+		}
+		$wp_smiliessearch .= preg_quote($rest, '/');
+	}
+	$wp_smiliessearch .= ')(?:\s|$)/m';
+}
+/**
+* Merge user defined arguments into defaults array.
+*
+* This function is used throughout WordPress to allow for both string or array
+* to be merged into another array.
+*
+* @since 2.2.0
+*
+* @param string|array $args Value to merge with $defaults
+* @param array $defaults Array that serves as the defaults.
+* @return array Merged user defined values with defaults.
+*/
+function wp_parse_args( $args, $defaults = '' ) {
+	if ( is_object( $args ) )
+		$r = get_object_vars( $args );
+	elseif ( is_array( $args ) )
+		$r =& $args;
+	else
+		wp_parse_str( $args, $r );
+	if ( is_array( $defaults ) )
+		return array_merge( $defaults, $r );
+	return $r;
+}
+/**
+* Determines if Widgets library should be loaded.
+*
+* Checks to make sure that the widgets library hasn't already been loaded. If
+* it hasn't, then it will load the widgets library and run an action hook.
+*
+* @since 2.2.0
+* @uses add_action() Calls '_admin_menu' hook with 'wp_widgets_add_menu' value.
+*/
+function wp_maybe_load_widgets() {
+	if ( ! apply_filters('load_default_widgets', true) )
+		return;
+	require_once( ABSPATH . WPINC . '/default-widgets.php' );
+	add_action( '_admin_menu', 'wp_widgets_add_menu' );
+}
+/**
+* Append the Widgets menu to the themes main menu.
+*
+* @since 2.2.0
+* @uses $submenu The administration submenu list.
+*/
+function wp_widgets_add_menu() {
+	global $submenu;
+	$submenu['themes.php'][7] = array( __( 'Widgets' ), 'switch_themes', 'widgets.php' );
+	ksort( $submenu['themes.php'], SORT_NUMERIC );
+}
+/**
+* Flush all output buffers for PHP 5.2.
+*
+* Make sure all output buffers are flushed before our singletons our destroyed.
+*
+* @since 2.2.0
+*/
+function wp_ob_end_flush_all() {
+	$levels = ob_get_level();
+	for ($i=0; $i<$levels; $i++)
+		ob_end_flush();
+}
+/**
+* Load the correct database class file.
+*
+* This function is used to load the database class file either at runtime or by
+* wp-admin/setup-config.php We must globalise $wpdb to ensure that it is
+* defined globally by the inline code in wp-db.php.
+*
+* @since 2.5.0
+* @global $wpdb WordPress Database Object
+*/
+function require_wp_db() {
+	global $wpdb;
+	if ( file_exists( WP_CONTENT_DIR . '/db.php' ) )
+		require_once( WP_CONTENT_DIR . '/db.php' );
+	else
+		require_once( ABSPATH . WPINC . '/wp-db.php' );
+}
+/**
+* Load custom DB error or display WordPress DB error.
+*
+* If a file exists in the wp-content directory named db-error.php, then it will
+* be loaded instead of displaying the WordPress DB error. If it is not found,
+* then the WordPress DB error will be displayed instead.
+*
+* The WordPress DB error sets the HTTP status header to 500 to try to prevent
+* search engines from caching the message. Custom DB messages should do the
+* same.
+*
+* This function was backported to the the WordPress 2.3.2, but originally was
+* added in WordPress 2.5.0.
+*
+* @since 2.3.2
+* @uses $wpdb
+*/
+function dead_db() {
+	global $wpdb;
+	// Load custom DB error template, if present.
+	if ( file_exists( WP_CONTENT_DIR . '/db-error.php' ) ) {
+		require_once( WP_CONTENT_DIR . '/db-error.php' );
+		die();
+	}
+	// If installing or in the admin, provide the verbose message.
+	if ( defined('WP_INSTALLING') || defined('WP_ADMIN') )
+		wp_die($wpdb->error);
+	// Otherwise, be terse.
+	status_header( 500 );
+	nocache_headers();
+	header( 'Content-Type: text/html; charset=utf-8' );
+?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) ) language_attributes(); ?>>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+	<title>Database Error</title>
+</head>
+<body>
+	<h1>Error establishing a database connection</h1>
+</body>
+</html>
+<?php
+	die();
+}
+/**
+* Converts value to nonnegative integer.
+*
+* @since 2.5.0
+*
+* @param mixed $maybeint Data you wish to have convered to an nonnegative integer
+* @return int An nonnegative integer
+*/
+function absint( $maybeint ) {
+	return abs( intval( $maybeint ) );
+}
+/**
+* Determines if the blog can be accessed over SSL.
+*
+* Determines if blog can be accessed over SSL by using cURL to access the site
+* using the https in the siteurl. Requires cURL extension to work correctly.
+*
+* @since 2.5.0
+*
+* @return bool Whether or not SSL access is available
+*/
+function url_is_accessable_via_ssl($url)
+{
+	if (in_array('curl', get_loaded_extensions())) {
+		$ssl = preg_replace( '/^http:\/\//', 'https://',  $url );
+		$ch = curl_init();
+		curl_setopt($ch, CURLOPT_URL, $ssl);
+		curl_setopt($ch, CURLOPT_FAILONERROR, true);
+		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
+		curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
+		curl_exec($ch);
+		$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+		curl_close ($ch);
+		if ($status == 200 || $status == 401) {
+			return true;
+		}
+	}
+	return false;
+}
+/**
+* Secure URL, if available or the given URL.
+*
+* @since 2.5.0
+*
+* @param string $url Complete URL path with transport.
+* @return string Secure or regular URL path.
+*/
+function atom_service_url_filter($url)
+{
+	if ( url_is_accessable_via_ssl($url) )
+		return preg_replace( '/^http:\/\//', 'https://',  $url );
+	else
+		return $url;
+}
+/**
+* Marks a function as deprecated and informs when it has been used.
+*
+* There is a hook deprecated_function_run that will be called that can be used
+* to get the backtrace up to what file and function called the deprecated
+* function.
+*
+* The current behavior is to trigger an user error if WP_DEBUG is defined and
+* is true.
+*
+* This function is to be used in every function in depreceated.php
+*
+* @package WordPress
+* @package Debug
+* @since 2.5.0
+* @access private
+*
+* @uses do_action() Calls 'deprecated_function_run' and passes the function name and what to use instead.
+* @uses apply_filters() Calls 'deprecated_function_trigger_error' and expects boolean value of true to do trigger or false to not trigger error.
+*
+* @param string $function The function that was called
+* @param string $version The version of WordPress that deprecated the function
+* @param string $replacement Optional. The function that should have been called
+*/
+function _deprecated_function($function, $version, $replacement=null) {
+	do_action('deprecated_function_run', $function, $replacement);
+	// Allow plugin to filter the output error trigger
+	if( defined('WP_DEBUG') && ( true === WP_DEBUG ) && apply_filters( 'deprecated_function_trigger_error', true )) {
+		if( !is_null($replacement) )
+			trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) );
+		else
+			trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) );
+	}
+}
+/**
+* Marks a file as deprecated and informs when it has been used.
+*
+* There is a hook deprecated_file_included that will be called that can be used
+* to get the backtrace up to what file and function included the deprecated
+* file.
+*
+* The current behavior is to trigger an user error if WP_DEBUG is defined and
+* is true.
+*
+* This function is to be used in every file that is depreceated
+*
+* @package WordPress
+* @package Debug
+* @since 2.5.0
+* @access private
+*
+* @uses do_action() Calls 'deprecated_file_included' and passes the file name and what to use instead.
+* @uses apply_filters() Calls 'deprecated_file_trigger_error' and expects boolean value of true to do trigger or false to not trigger error.
+*
+* @param string $file The file that was included
+* @param string $version The version of WordPress that deprecated the function
+* @param string $replacement Optional. The function that should have been called
+*/
+function _deprecated_file($file, $version, $replacement=null) {
+	do_action('deprecated_file_included', $file, $replacement);
+	// Allow plugin to filter the output error trigger
+	if( defined('WP_DEBUG') && ( true === WP_DEBUG ) && apply_filters( 'deprecated_file_trigger_error', true )) {
+		if( !is_null($replacement) )
+			trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $file, $version, $replacement ) );
+		else
+			trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $file, $version ) );
+	}
+}
+/**
+* Is the server running earlier than 1.5.0 version of lighttpd
+*
+* @since 2.5.0
+*
+* @return bool Whether the server is running lighttpd < 1.5.0
+*/
+function is_lighttpd_before_150() {
+	$server_parts = explode( '/', isset( $_SERVER['SERVER_SOFTWARE'] )? $_SERVER['SERVER_SOFTWARE'] : '' );
+	$server_parts[1] = isset( $server_parts[1] )? $server_parts[1] : '';
+	return  'lighttpd' == $server_parts[0] && -1 == version_compare( $server_parts[1], '1.5.0' );
+}
+/**
+* Does the specified module exist in the apache config?
+*
+* @since 2.5.0
+*
+* @param string $mod e.g. mod_rewrite
+* @param bool $default The default return value if the module is not found
+* @return bool
+*/
+function apache_mod_loaded($mod, $default = false) {
+	global $is_apache;
+	if ( !$is_apache )
+		return false;
+	if ( function_exists('apache_get_modules') ) {
+		$mods = apache_get_modules();
+		if ( in_array($mod, $mods) )
+			return true;
+	} elseif ( function_exists('phpinfo') ) {
+			ob_start();
+			phpinfo(8);
+			$phpinfo = ob_get_clean();
+			if ( false !== strpos($phpinfo, $mod) )
+				return true;
+	}
+	return $default;
+}
+/**
+* File validates against allowed set of defined rules.
+*
+* A return value of '1' means that the $file contains either '..' or './'. A
+* return value of '2' means that the $file contains ':' after the first
+* character. A return value of '3' means that the file is not in the allowed
+* files list.
+*
+* @since 1.2.0
+*
+* @param string $file File path.
+* @param array $allowed_files List of allowed files.
+* @return int 0 means nothing is wrong, greater than 0 means something was wrong.
+*/
+function validate_file( $file, $allowed_files = '' ) {
+	if ( false !== strpos( $file, '..' ))
+		return 1;
+	if ( false !== strpos( $file, './' ))
+		return 1;
+	if (':' == substr( $file, 1, 1 ))
+		return 2;
+	if (!empty ( $allowed_files ) && (!in_array( $file, $allowed_files ) ) )
+		return 3;
+	return 0;
+}
+/**
+* Determine if SSL is used.
+*
+* @since 2.6.0
+*
+* @return bool True if SSL, false if not used.
+*/
+function is_ssl() {
+	if ( isset($_SERVER['HTTPS']) ) {
+		if ( 'on' == strtolower($_SERVER['HTTPS']) )
+			return true;
+		if ( '1' == $_SERVER['HTTPS'] )
+			return true;
+	} elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {
+		return true;
+	}
+	return false;
+}
+/**
+* Whether SSL login should be forced.
+*
+* @since 2.6.0
+*
+* @param string|bool $force Optional.
+* @return bool True if forced, false if not forced.
+*/
+function force_ssl_login($force = '') {
+	static $forced;
+	if ( '' != $force ) {
+		$old_forced = $forced;
+		$forced = $force;
+		return $old_forced;
+	}
+	return $forced;
+}
+/**
+* Whether to force SSL used for the Administration Panels.
+*
+* @since 2.6.0
+*
+* @param string|bool $force
+* @return bool True if forced, false if not forced.
+*/
+function force_ssl_admin($force = '') {
+	static $forced;
+	if ( '' != $force ) {
+		$old_forced = $forced;
+		$forced = $force;
+		return $old_forced;
+	}
+	return $forced;
+}
+/**
+* Guess the URL for the site.
+*
+* Will remove wp-admin links to retrieve only return URLs not in the wp-admin
+* directory.
+*
+* @since 2.6.0
+*
+* @return string
+*/
+function wp_guess_url() {
+	if ( defined('WP_SITEURL') && '' != WP_SITEURL ) {
+		$url = WP_SITEURL;
+	} else {
+		$schema = ( isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on' ) ? 'https://' : 'http://';
+		$url = preg_replace('|/wp-admin/.*|i', '', $schema . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
+	}
+	return $url;
+}
+/**
+* Suspend cache invalidation.
+*
+* Turns cache invalidation on and off.  Useful during imports where you don't wont to do invalidations
+* every time a post is inserted.  Callers must be sure that what they are doing won't lead to an inconsistent
+* cache when invalidation is suspended.
+*
+* @since 2.7.0
+*
+* @param bool $suspend Whether to suspend or enable cache invalidation
+* @return bool The current suspend setting
+*/
+function wp_suspend_cache_invalidation($suspend = true) {
+	global $_wp_suspend_cache_invalidation;
+	$current_suspend = $_wp_suspend_cache_invalidation;
+	$_wp_suspend_cache_invalidation = $suspend;
+	return $current_suspend;
+}
+function get_site_option( $key, $default = false, $use_cache = true ) {
+	return get_option($key, $default);
+}
+// expects $key, $value not to be SQL escaped
+function add_site_option( $key, $value ) {
+	return add_option($key, $value);
+}
+// expects $key, $value not to be SQL escaped
+function update_site_option( $key, $value ) {
+	return update_option($key, $value);
+}
+/**
+* gmt_offset modification for smart timezone handling
+*
+* Overrides the gmt_offset option if we have a timezone_string available
+*/
+function wp_timezone_override_offset() {
+	if ( !wp_timezone_supported() ) {
+		return false;
+	}
+	if ( !$timezone_string = get_option( 'timezone_string' ) ) {
+		return false;
+	}
+	@date_default_timezone_set( $timezone_string );
+	$timezone_object = timezone_open( $timezone_string );
+	$datetime_object = date_create();
+	if ( false === $timezone_object || false === $datetime_object ) {
+		return false;
+	}
+	return round( timezone_offset_get( $timezone_object, $datetime_object ) / 3600, 2 );
+}
+/**
+* Check for PHP timezone support
+*/
+function wp_timezone_supported() {
+	$support = false;
+	if (
+		function_exists( 'date_default_timezone_set' ) &&
+		function_exists( 'timezone_identifiers_list' ) &&
+		function_exists( 'timezone_open' ) &&
+		function_exists( 'timezone_offset_get' )
+	) {
+		$support = true;
+	}
+	return apply_filters( 'timezone_support', $support );
+}
+function _wp_timezone_choice_usort_callback( $a, $b ) {
+	// Don't use translated versions of Etc
+	if ( 'Etc' === $a['continent'] && 'Etc' === $b['continent'] ) {
+		// Make the order of these more like the old dropdown
+		if ( 'GMT+' === substr( $a['city'], 0, 4 ) && 'GMT+' === substr( $b['city'], 0, 4 ) ) {
+			return -1 * ( strnatcasecmp( $a['city'], $b['city'] ) );
+		}
+		if ( 'UTC' === $a['city'] ) {
+			if ( 'GMT+' === substr( $b['city'], 0, 4 ) ) {
+				return 1;
+			}
+			return -1;
+		}
+		if ( 'UTC' === $b['city'] ) {
+			if ( 'GMT+' === substr( $a['city'], 0, 4 ) ) {
+				return -1;
+			}
+			return 1;
+		}
+		return strnatcasecmp( $a['city'], $b['city'] );
+	}
+	if ( $a['t_continent'] == $b['t_continent'] ) {
+		if ( $a['t_city'] == $b['t_city'] ) {
+			return strnatcasecmp( $a['t_subcity'], $b['t_subcity'] );
+		}
+		return strnatcasecmp( $a['t_city'], $b['t_city'] );
+	} else {
+		// Force Etc to the bottom of the list
+		if ( 'Etc' === $a['continent'] ) {
+			return 1;
+		}
+		if ( 'Etc' === $b['continent'] ) {
+			return -1;
+		}
+		return strnatcasecmp( $a['t_continent'], $b['t_continent'] );
+	}
+}
+/**
+* Gives a nicely formatted list of timezone strings // temporary! Not in final
+*
+* @param $selected_zone string Selected Zone
+*
+*/
+function wp_timezone_choice( $selected_zone ) {
+	static $mo_loaded = false;
+	$continents = array( 'Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific', 'Etc' );
+	// Load translations for continents and cities
+	if ( !$mo_loaded ) {
+		$locale = get_locale();
+		$mofile = WP_LANG_DIR . '/continents-cities-' . $locale . '.mo';
+		load_textdomain( 'continents-cities', $mofile );
+		$mo_loaded = true;
+	}
+	$zonen = array();
+	foreach ( timezone_identifiers_list() as $zone ) {
+		$zone = explode( '/', $zone );
+		if ( !in_array( $zone[0], $continents ) ) {
+			continue;
+		}
+		if ( 'Etc' === $zone[0] && in_array( $zone[1], array( 'UCT', 'GMT', 'GMT0', 'GMT+0', 'GMT-0', 'Greenwich', 'Universal', 'Zulu' ) ) ) {
+			continue;
+		}
+		// This determines what gets set and translated - we don't translate Etc/* strings here, they are done later
+		$exists = array(
+			0 => ( isset( $zone[0] ) && $zone[0] ) ? true : false,
+			1 => ( isset( $zone[1] ) && $zone[1] ) ? true : false,
+			2 => ( isset( $zone[2] ) && $zone[2] ) ? true : false
+		);
+		$exists[3] = ( $exists[0] && 'Etc' !== $zone[0] ) ? true : false;
+		$exists[4] = ( $exists[1] && $exists[3] ) ? true : false;
+		$exists[5] = ( $exists[2] && $exists[3] ) ? true : false;
+		$zonen[] = array(
+			'continent'   => ( $exists[0] ? $zone[0] : '' ),
+			'city'        => ( $exists[1] ? $zone[1] : '' ),
+			'subcity'     => ( $exists[2] ? $zone[2] : '' ),
+			't_continent' => ( $exists[3] ? translate( str_replace( '_', ' ', $zone[0] ), 'continents-cities' ) : '' ),
+			't_city'      => ( $exists[4] ? translate( str_replace( '_', ' ', $zone[1] ), 'continents-cities' ) : '' ),
+			't_subcity'   => ( $exists[5] ? translate( str_replace( '_', ' ', $zone[2] ), 'continents-cities' ) : '' )
+		);
+	}
+	usort( $zonen, '_wp_timezone_choice_usort_callback' );
+	$structure = array();
+	if ( empty( $selected_zone ) ) {
+		$structure[] = '<option selected="selected" value="">' . __( 'Select a city' ) . '</option>';
+	}
+	foreach ( $zonen as $key => $zone ) {
+		// Build value in an array to join later
+		$value = array( $zone['continent'] );
+		if ( empty( $zone['city'] ) ) {
+			// It's at the continent level (generally won't happen)
+			$display = $zone['t_continent'];
+		} else {
+			// It's inside a continent group
+			// Continent optgroup
+			if ( !isset( $zonen[$key - 1] ) || $zonen[$key - 1]['continent'] !== $zone['continent'] ) {
+				$label = ( 'Etc' === $zone['continent'] ) ? __( 'Manual offsets' ) : $zone['t_continent'];
+				$structure[] = '<optgroup label="'. esc_attr( $label ) .'">';
+			}
+			// Add the city to the value
+			$value[] = $zone['city'];
+			if ( 'Etc' === $zone['continent'] ) {
+				if ( 'UTC' === $zone['city'] ) {
+					$display = '';
+				} else {
+					$display = str_replace( 'GMT', '', $zone['city'] );
+					$display = strtr( $display, '+-', '-+' ) . ':00';
+				}
+				$display = sprintf( __( 'UTC %s' ), $display );
+			} else {
+				$display = $zone['t_city'];
+				if ( !empty( $zone['subcity'] ) ) {
+					// Add the subcity to the value
+					$value[] = $zone['subcity'];
+					$display .= ' - ' . $zone['t_subcity'];
+				}
+			}
+		}
+		// Build the value
+		$value = join( '/', $value );
+		$selected = '';
+		if ( $value === $selected_zone ) {
+			$selected = 'selected="selected" ';
+		}
+		$structure[] = '<option ' . $selected . 'value="' . esc_attr( $value ) . '">' . esc_html( $display ) . "</option>";
+		// Close continent optgroup
+		if ( !empty( $zone['city'] ) && ( !isset($zonen[$key + 1]) || (isset( $zonen[$key + 1] ) && $zonen[$key + 1]['continent'] !== $zone['continent']) ) ) {
+			$structure[] = '</optgroup>';
+		}
+	}
+	return join( "\n", $structure );
+}
+/**
+* Strip close comment and close php tags from file headers used by WP
+* See http://core.trac.wordpress.org/ticket/8497
+*
+* @since 2.8
+**/
+function _cleanup_header_comment($str) {
+	return trim(preg_replace("/\s*(?:\*\/|\?>).*/", '', $str));
+}
+?>

branch	wordpress
changeset 109	03b0d1493584
child 132	4d4862461b8d