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WordPress/wp-includes/functions.php

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<?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 = esc_sql( $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 );
do_action( 'update_option', $option_name, $oldvalue, $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 );
do_action( 'updated_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 = esc_sql( $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';
do_action( 'add_option', $name, $value );
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->query( $wpdb->prepare( "INSERT INTO `$wpdb->options` (`option_name`, `option_value`, `autoload`) VALUES (%s, %s, %s) ON DUPLICATE KEY UPDATE `option_name` = VALUES(`option_name`), `option_value` = VALUES(`option_value`), `autoload` = VALUES(`autoload`)", $name, $value, $autoload ) );
do_action( "add_option_{$name}", $name, $value );
do_action( 'added_option', $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 autoload FROM $wpdb->options WHERE option_name = '$name'" );
if ( is_null($option) )
return false;
do_action( 'delete_option', $name );
// expected_slashed ($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' );
}
do_action( 'deleted_option', $name );
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 {
$transient = '_transient_' . esc_sql($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 {
$transient_option = '_transient_' . esc_sql($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] ) ) {
$transient_timeout = '_transient_timeout_' . esc_sql($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;
$safe_transient = esc_sql($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;
}
/**
* 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
$mid = $wpdb->get_col( $wpdb->prepare("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, $link_test . '%') );
do_action( 'delete_postmeta', $mid );
$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE post_id IN(%s)", implode( ',', $mid ) ) );
do_action( 'deleted_postmeta', $mid );
}
}
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) );
do_action( 'added_postmeta', $wpdb->insert_id, $post_ID, 'enclosure', $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] = esc_sql( $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 );
if ( $installed )
return true;
$suppress = $wpdb->suppress_errors();
$tables = $wpdb->get_col('SHOW TABLES');
$wpdb->suppress_errors( $suppress );
// Loop over the WP tables. If none exist, then scratch install is allowed.
// If one or more exist, suggest table repair since we got here because the options
// table could not be accessed.
foreach ($wpdb->tables as $table) {
// If one of the WP tables exist, then we are in an insane state.
if ( in_array($wpdb->prefix . $table, $tables) ) {
// If visiting repair.php, return true and let it take over.
if ( defined('WP_REPAIRING') )
return true;
// Die with a DB error.
$wpdb->error = __('One or more database tables are unavailable. The database may need to be <a href="maint/repair.php?referrer=is_blog_installed">repaired</a>.');
dead_db();
}
}
wp_cache_set( 'is_blog_installed', false );
return false;
}
/**
* 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;
if ( 'wp-content/uploads' == $upload_path ) {
$dir = WP_CONTENT_DIR . '/uploads';
} elseif ( 0 !== strpos($dir, ABSPATH) ) {
// $dir is absolute, $upload_path is (maybe) relative to ABSPATH
$dir = path_join( ABSPATH, $dir );
}
}
if ( !$url = get_option( 'upload_url_path' ) ) {
if ( empty($upload_path) || ( 'wp-content/uploads' == $upload_path ) || ( $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 = '';
// change '.ext' to lower case
if ( $ext && strtolower($ext) != $ext ) {
$ext2 = strtolower($ext);
$filename2 = preg_replace( '|' . preg_quote($ext) . '$|', $ext2, $filename );
// check for both lower and upper case extension or image sub-sizes may be overwritten
while ( file_exists($dir . "/$filename") || file_exists($dir . "/$filename2") ) {
$new_number = $number + 1;
$filename = str_replace( "$number$ext", "$new_number$ext", $filename );
$filename2 = str_replace( "$number$ext2", "$new_number$ext2", $filename2 );
$number = $new_number;
}
return $filename2;
}
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',
'flv' => 'video/x-flv',
'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 . '-' . $noun, __( 'Are you sure you want to do this?' ), isset($matches[4]) ? $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 ( 'log-out' == $action )
$html .= "</p><p>" . sprintf( __( "Do you really want to <a href='%s'>log out</a>?"), wp_logout_url() );
elseif ( wp_get_referer() )
$html .= "</p><p><a href='" . esc_url( remove_query_arg( 'updated', wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>";
wp_die( $html, $title, array('response' => 403) );
}
/**
* 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">
<!-- Ticket #11289, 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 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>
</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 default embed handlers should be loaded.
*
* Checks to make sure that the embeds library hasn't already been loaded. If
* it hasn't, then it will load the embeds library.
*
* @since 2.9
*/
function wp_maybe_load_embeds() {
if ( ! apply_filters('load_default_embeds', true) )
return;
require_once( ABSPATH . WPINC . '/default-embeds.php' );
}
/**
* 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 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, $replacement);
// Allow plugin to filter the output error trigger
if( WP_DEBUG && apply_filters( 'deprecated_function_trigger_error', true )) {
if( !is_null($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 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 file
* @param string $replacement Optional. The file that should have been included based on ABSPATH
*/
function _deprecated_file($file, $version, $replacement=null) {
do_action('deprecated_file_included', $file, $replacement);
// Allow plugin to filter the output error trigger
if( WP_DEBUG && apply_filters( 'deprecated_file_trigger_error', true ) ) {
if( !is_null($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 (!empty ( $allowed_files ) && (!in_array( $file, $allowed_files ) ) )
return 3;
if (':' == substr( $file, 1, 1 ))
return 2;
return 0;
}
/**
* Determine if SSL is used.
*
* @since 2.6.0
*
* @return bool True if SSL, false if not used.
*/
function is_ssl() {
if ( isset($_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 = null ) {
static $forced = false;
if ( !is_null( $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 = null ) {
static $forced = false;
if ( !is_null( $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 ) {
// Allow plugins to short-circuit site options.
$pre = apply_filters( 'pre_site_option_' . $key, false );
if ( false !== $pre )
return $pre;
$value = get_option($key, $default);
return apply_filters( 'site_option_' . $key, $value );
}
// expects $key, $value not to be SQL escaped
function add_site_option( $key, $value ) {
$value = apply_filters( 'pre_add_site_option_' . $key, $value );
$result = add_option($key, $value);
do_action( "add_site_option_{$key}", $key, $value );
return $result;
}
function delete_site_option( $key ) {
$result = delete_option($key);
do_action( "delete_site_option_{$key}", $key );
return $result;
}
// expects $key, $value not to be SQL escaped
function update_site_option( $key, $value ) {
$oldvalue = get_site_option( $key );
$value = apply_filters( 'pre_update_site_option_' . $key, $value, $oldvalue );
$result = update_option($key, $value);
do_action( "update_site_option_{$key}", $key, $value );
return $result;
}
/**
* Delete a site transient
*
* @since 2.890
* @package WordPress
* @subpackage Transient
*
* @param string $transient Transient name. Expected to not be SQL-escaped
* @return bool true if successful, false otherwise
*/
function delete_site_transient($transient) {
global $_wp_using_ext_object_cache, $wpdb;
if ( $_wp_using_ext_object_cache ) {
return wp_cache_delete($transient, 'site-transient');
} else {
$transient = '_site_transient_' . esc_sql($transient);
return delete_site_option($transient);
}
}
/**
* Get the value of a site transient
*
* If the transient does not exist or does not have a value, then the return value
* will be false.
*
* @since 2.9.0
* @package WordPress
* @subpackage Transient
*
* @param string $transient Transient name. Expected to not be SQL-escaped
* @return mixed Value of transient
*/
function get_site_transient($transient) {
global $_wp_using_ext_object_cache, $wpdb;
$pre = apply_filters( 'pre_site_transient_' . $transient, false );
if ( false !== $pre )
return $pre;
if ( $_wp_using_ext_object_cache ) {
$value = wp_cache_get($transient, 'site-transient');
} else {
$transient_option = '_site_transient_' . esc_sql($transient);
$transient_timeout = '_site_transient_timeout_' . esc_sql($transient);
if ( get_site_option($transient_timeout) < time() ) {
delete_site_option($transient_option);
delete_site_option($transient_timeout);
return false;
}
$value = get_site_option($transient_option);
}
return apply_filters('site_transient_' . $transient, $value);
}
/**
* Set/update the value of a site 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 2.9.0
* @package WordPress
* @subpackage Transient
*
* @param string $transient Transient name. Expected to not be SQL-escaped
* @param mixed $value Transient value.
* @param int $expiration Time until expiration in seconds, default 0
* @return bool False if value was not set and true if value was set.
*/
function set_site_transient($transient, $value, $expiration = 0) {
global $_wp_using_ext_object_cache, $wpdb;
if ( $_wp_using_ext_object_cache ) {
return wp_cache_set($transient, $value, 'site-transient', $expiration);
} else {
$transient_timeout = '_site_transient_timeout_' . $transient;
$transient = '_site_transient_' . $transient;
$safe_transient = esc_sql($transient);
if ( false === get_site_option( $safe_transient ) ) {
if ( 0 != $expiration )
add_site_option($transient_timeout, time() + $expiration);
return add_site_option($transient, $value);
} else {
if ( 0 != $expiration )
update_site_option($transient_timeout, time() + $expiration);
return update_site_option($transient, $value);
}
}
}
/**
* gmt_offset modification for smart timezone handling
*
* Overrides the gmt_offset option if we have a timezone_string available
*/
function wp_timezone_override_offset() {
if ( !wp_timezone_supported() ) {
return false;
}
if ( !$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;
$continents = array( 'Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific');
// Load translations for continents and cities
if ( !$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;
}
// 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 = $zone['t_continent'];
$structure[] = '<optgroup label="'. esc_attr( $label ) .'">';
}
// Add the city to the value
$value[] = $zone['city'];
$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>';
}
}
// Do UTC
$structure[] = '<optgroup label="'. esc_attr__( 'UTC' ) .'">';
$selected = '';
if ( 'UTC' === $selected_zone )
$selected = 'selected="selected" ';
$structure[] = '<option ' . $selected . 'value="' . esc_attr( 'UTC' ) . '">' . __('UTC') . '</option>';
$structure[] = '</optgroup>';
// Do manual UTC offsets
$structure[] = '<optgroup label="'. esc_attr__( 'Manual Offsets' ) .'">';
$offset_range = array (-12, -11.5, -11, -10.5, -10, -9.5, -9, -8.5, -8, -7.5, -7, -6.5, -6, -5.5, -5, -4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, -0.5,
0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 5.75, 6, 6.5, 7, 7.5, 8, 8.5, 8.75, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.75, 13, 13.75, 14);
foreach ( $offset_range as $offset ) {
if ( 0 <= $offset )
$offset_name = '+' . $offset;
else
$offset_name = (string) $offset;
$offset_value = $offset_name;
$offset_name = str_replace(array('.25','.5','.75'), array(':15',':30',':45'), $offset_name);
$offset_name = 'UTC' . $offset_name;
$offset_value = 'UTC' . $offset_value;
$selected = '';
if ( $offset_value === $selected_zone )
$selected = 'selected="selected" ';
$structure[] = '<option ' . $selected . 'value="' . esc_attr( $offset_value ) . '">' . esc_html( $offset_name ) . "</option>";
}
$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));
}
/**
* Permanently deletes posts, pages, attachments, and comments which have been in the trash for EMPTY_TRASH_DAYS.
*
* @since 2.9.0
*
* @return void
*/
function wp_scheduled_delete() {
global $wpdb;
$delete_timestamp = time() - (60*60*24*EMPTY_TRASH_DAYS);
$posts_to_delete = $wpdb->get_results($wpdb->prepare("SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A);
foreach ( (array) $posts_to_delete as $post ) {
$post_id = (int) $post['post_id'];
if ( !$post_id )
continue;
$del_post = get_post($post_id);
if ( !$del_post || 'trash' != $del_post->post_status ) {
delete_post_meta($post_id, '_wp_trash_meta_status');
delete_post_meta($post_id, '_wp_trash_meta_time');
} else {
wp_delete_post($post_id);
}
}
$comments_to_delete = $wpdb->get_results($wpdb->prepare("SELECT comment_id FROM $wpdb->commentmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A);
foreach ( (array) $comments_to_delete as $comment ) {
$comment_id = (int) $comment['comment_id'];
if ( !$comment_id )
continue;
$del_comment = get_comment($comment_id);
if ( !$del_comment || 'trash' != $del_comment->comment_approved ) {
delete_comment_meta($comment_id, '_wp_trash_meta_time');
delete_comment_meta($comment_id, '_wp_trash_meta_status');
} else {
wp_delete_comment($comment_id);
}
}
}
/**
* Parse the file contents to retrieve its metadata.
*
* Searches for metadata for a file, such as a plugin or theme. Each piece of
* metadata must be on its own line. For a field spanning multple lines, it
* must not have any newlines or only parts of it will be displayed.
*
* Some users have issues with opening large files and manipulating the contents
* for want is usually the first 1kiB or 2kiB. This function stops pulling in
* the file contents when it has all of the required data.
*
* The first 8kiB of the file will be pulled in and if the file data is not
* within that first 8kiB, then the author should correct their plugin file
* and move the data headers to the top.
*
* The file is assumed to have permissions to allow for scripts to read
* the file. This is not checked however and the file is only opened for
* reading.
*
* @since 2.9.0
*
* @param string $file Path to the file
* @param bool $markup If the returned data should have HTML markup applied
* @param string $context If specified adds filter hook "extra_<$context>_headers"
*/
function get_file_data( $file, $default_headers, $context = '' ) {
// We don't need to write to the file, so just open for reading.
$fp = fopen( $file, 'r' );
// Pull only the first 8kiB of the file in.
$file_data = fread( $fp, 8192 );
// PHP will close file handle, but we are good citizens.
fclose( $fp );
if( $context != '' ) {
$extra_headers = apply_filters( "extra_$context".'_headers', array() );
$extra_headers = array_flip( $extra_headers );
foreach( $extra_headers as $key=>$value ) {
$extra_headers[$key] = $key;
}
$all_headers = array_merge($extra_headers, $default_headers);
} else {
$all_headers = $default_headers;
}
foreach ( $all_headers as $field => $regex ) {
preg_match( '/' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, ${$field});
if ( !empty( ${$field} ) )
${$field} = _cleanup_header_comment( ${$field}[1] );
else
${$field} = '';
}
$file_data = compact( array_keys( $all_headers ) );
return $file_data;
}
/*
* Used internally to tidy up the search terms
*
* @private
* @since 2.9.0
*/
function _search_terms_tidy($t) {
return trim($t, "\"\'\n\r ");
}
?>
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