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 ); } $timezone_formats = array( 'P', 'I', 'O', 'T', 'Z', 'e' ); $timezone_formats_re = implode( '|', $timezone_formats ); if ( preg_match( "/$timezone_formats_re/", $dateformatstring ) && wp_timezone_supported() ) { $timezone_string = get_option( 'timezone_string' ); if ( $timezone_string ) { $timezone_object = timezone_open( $timezone_string ); $date_object = date_create( null, $timezone_object ); foreach( $timezone_formats as $timezone_format ) { if ( false !== strpos( $dateformatstring, $timezone_format ) ) { $formatted = date_format( $date_object, $timezone_format ); $dateformatstring = ' '.$dateformatstring; $dateformatstring = preg_replace( "/([^\\\])$timezone_format/", "\\1" . backslashit( $formatted ), $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 integer number to format based on the locale. * * @since 2.3.0 * * @param int $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 = 0 ) { global $wp_locale; $formatted = number_format( $number, absint( $decimals ), $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] ); return apply_filters( 'number_format_i18n', $formatted ); } /** * 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. Deprecated. * @return bool|string False on failure. Number string on success. */ function size_format( $bytes, $decimals = 0 ) { $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', $day ); // The day of the week from the timestamp if ( !is_numeric($start_of_week) ) $start_of_week = get_option( 'start_of_week' ); if ( $weekday < $start_of_week ) $weekday += 7; $start = $day - 86400 * ( $weekday - $start_of_week ); // The most recent week start day on or before $day $end = $start + 604799; // $start + 7 days - 1 second return compact( 'start', 'end' ); } /** * 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; $length = strlen( $data ); if ( $length < 4 ) return false; if ( ':' !== $data[1] ) return false; $lastc = $data[$length-1]; if ( ';' !== $lastc && '}' !== $lastc ) return false; $token = $data[0]; switch ( $token ) { case 's' : if ( '"' !== $data[$length-2] ) return false; case 'a' : case 'O' : return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data ); case 'b' : case 'i' : case 'd' : return (bool) preg_match( "/^{$token}:[0-9.E-]+;\$/", $data ); } 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', $data ) ) // this should fetch all serialized strings return true; return false; } /** * Retrieve option value based on name of option. * * If the option does not exist or does not have a value, then the return value * will be false. This is useful to check whether you need to install an option * and is commonly used during installation of plugin options and to test * whether upgrading is required. * * If the option was serialized then it will be unserialized when it is returned. * * @since 1.5.0 * @package WordPress * @subpackage Option * @uses apply_filters() Calls 'pre_option_$option' before checking the option. * Any value other than false will "short-circuit" the retrieval of the option * and return the returned value. You should not try to override special options, * but you will not be prevented from doing so. * @uses apply_filters() Calls 'option_$option', after checking the option, with * the option value. * * @param string $option Name of option to retrieve. Expected to not be SQL-escaped. * @return mixed Value set for the option. */ function get_option( $option, $default = false ) { global $wpdb; // Allow plugins to short-circuit options. $pre = apply_filters( 'pre_option_' . $option, false ); if ( false !== $pre ) return $pre; $option = trim($option); if ( empty($option) ) return false; if ( defined( 'WP_SETUP_CONFIG' ) ) return false; if ( ! defined( 'WP_INSTALLING' ) ) { // prevent non-existent options from triggering multiple queries $notoptions = wp_cache_get( 'notoptions', 'options' ); if ( isset( $notoptions[$option] ) ) return $default; $alloptions = wp_load_alloptions(); if ( isset( $alloptions[$option] ) ) { $value = $alloptions[$option]; } else { $value = wp_cache_get( $option, 'options' ); if ( false === $value ) { $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) ); // Has to be get_row instead of get_var because of funkiness with 0, false, null values if ( is_object( $row ) ) { $value = $row->option_value; wp_cache_add( $option, $value, 'options' ); } else { // option does not exist, so we must cache its non-existence $notoptions[$option] = true; wp_cache_set( 'notoptions', $notoptions, 'options' ); return $default; } } } } else { $suppress = $wpdb->suppress_errors(); $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) ); $wpdb->suppress_errors( $suppress ); if ( is_object( $row ) ) $value = $row->option_value; else return $default; } // If home is not set use siteurl. if ( 'home' == $option && '' == $value ) return get_option( 'siteurl' ); if ( in_array( $option, array('siteurl', 'home', 'category_base', 'tag_base') ) ) $value = untrailingslashit( $value ); return apply_filters( 'option_' . $option, 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 ) ) wp_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 ) ); } /** * Loads and caches all autoloaded options, if available or all options. * * @since 2.2.0 * @package WordPress * @subpackage Option * * @return array List of all options. */ function wp_load_alloptions() { global $wpdb; if ( !defined( 'WP_INSTALLING' ) || !is_multisite() ) $alloptions = wp_cache_get( 'alloptions', 'options' ); else $alloptions = false; if ( !$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; } if ( !defined( 'WP_INSTALLING' ) || !is_multisite() ) wp_cache_add( 'alloptions', $alloptions, 'options' ); } return $alloptions; } /** * Loads and caches certain often requested site options if is_multisite() and a peristent cache is not being used. * * @since 3.0.0 * @package WordPress * @subpackage Option * * @param int $site_id Optional site ID for which to query the options. Defaults to the current site. */ function wp_load_core_site_options( $site_id = null ) { global $wpdb, $_wp_using_ext_object_cache; if ( !is_multisite() || $_wp_using_ext_object_cache || defined( 'WP_INSTALLING' ) ) return; if ( empty($site_id) ) $site_id = $wpdb->siteid; $core_options = array('site_name', 'siteurl', 'active_sitewide_plugins', '_site_transient_timeout_theme_roots', '_site_transient_theme_roots', 'site_admins', 'can_compress_scripts', 'global_terms_enabled' ); $core_options_in = "'" . implode("', '", $core_options) . "'"; $options = $wpdb->get_results( $wpdb->prepare("SELECT meta_key, meta_value FROM $wpdb->sitemeta WHERE meta_key IN ($core_options_in) AND site_id = %d", $site_id) ); foreach ( $options as $option ) { $key = $option->meta_key; $cache_key = "{$site_id}:$key"; $option->meta_value = maybe_unserialize( $option->meta_value ); wp_cache_set( $cache_key, $option->meta_value, 'site-options' ); } } /** * Update the value of an option that was already added. * * You do not need to serialize values. If the value needs to be serialized, then * it will be serialized before it is inserted into the database. Remember, * resources can not be serialized or added as an option. * * If the option does not exist, then the option will be added with the option * value, but you will not be able to set whether it is autoloaded. If you want * to set whether an option is autoloaded, then you need to use the add_option(). * * @since 1.0.0 * @package WordPress * @subpackage Option * * @uses apply_filters() Calls 'pre_update_option_$option' hook to allow overwriting the * option value to be stored. * @uses do_action() Calls 'update_option' hook before updating the option. * @uses do_action() Calls 'update_option_$option' and 'updated_option' hooks on success. * * @param string $option Option name. Expected to not be SQL-escaped. * @param mixed $newvalue Option value. Expected to not be SQL-escaped. * @return bool False if value was not updated and true if value was updated. */ function update_option( $option, $newvalue ) { global $wpdb; $option = trim($option); if ( empty($option) ) return false; wp_protect_special_option( $option ); if ( is_object($newvalue) ) $newvalue = wp_clone($newvalue); $newvalue = sanitize_option( $option, $newvalue ); $oldvalue = get_option( $option ); $newvalue = apply_filters( 'pre_update_option_' . $option, $newvalue, $oldvalue ); // If the new and old values are the same, no need to update. if ( $newvalue === $oldvalue ) return false; if ( false === $oldvalue ) return add_option( $option, $newvalue ); $notoptions = wp_cache_get( 'notoptions', 'options' ); if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) { unset( $notoptions[$option] ); wp_cache_set( 'notoptions', $notoptions, 'options' ); } $_newvalue = $newvalue; $newvalue = maybe_serialize( $newvalue ); do_action( 'update_option', $option, $oldvalue, $_newvalue ); if ( ! defined( 'WP_INSTALLING' ) ) { $alloptions = wp_load_alloptions(); if ( isset( $alloptions[$option] ) ) { $alloptions[$option] = $_newvalue; wp_cache_set( 'alloptions', $alloptions, 'options' ); } else { wp_cache_set( $option, $_newvalue, 'options' ); } } $result = $wpdb->update( $wpdb->options, array( 'option_value' => $newvalue ), array( 'option_name' => $option ) ); if ( $result ) { do_action( "update_option_{$option}", $oldvalue, $_newvalue ); do_action( 'updated_option', $option, $oldvalue, $_newvalue ); return true; } return false; } /** * Add a new option. * * You do not need to serialize values. If the value needs to be serialized, then * it will be serialized before it is inserted into the database. Remember, * resources can not be serialized or added as an option. * * You can create options without values and then add values later. Does not * check whether the option has already been added, but does check that you * aren't adding a protected WordPress option. Care should be taken to not name * options the same as the ones which are protected and to not add options * that were already added. * * @package WordPress * @subpackage Option * @since 1.0.0 * * @uses do_action() Calls 'add_option' hook before adding the option. * @uses do_action() Calls 'add_option_$option' and 'added_option' hooks on success. * * @param string $option Name of option to add. Expected to not be SQL-escaped. * @param mixed $value Optional. Option value, can be anything. Expected to not be SQL-escaped. * @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( $option, $value = '', $deprecated = '', $autoload = 'yes' ) { global $wpdb; if ( !empty( $deprecated ) ) _deprecated_argument( __FUNCTION__, '2.3' ); $option = trim($option); if ( empty($option) ) return false; wp_protect_special_option( $option ); if ( is_object($value) ) $value = wp_clone($value); $value = sanitize_option( $option, $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( $notoptions[$option] ) ) if ( false !== get_option( $option ) ) return; $_value = $value; $value = maybe_serialize( $value ); $autoload = ( 'no' === $autoload ) ? 'no' : 'yes'; do_action( 'add_option', $option, $_value ); if ( ! defined( 'WP_INSTALLING' ) ) { if ( 'yes' == $autoload ) { $alloptions = wp_load_alloptions(); $alloptions[$option] = $value; wp_cache_set( 'alloptions', $alloptions, 'options' ); } else { wp_cache_set( $option, $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( $notoptions[$option] ) ) { unset( $notoptions[$option] ); wp_cache_set( 'notoptions', $notoptions, 'options' ); } $result = $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`)", $option, $value, $autoload ) ); if ( $result ) { do_action( "add_option_{$option}", $option, $_value ); do_action( 'added_option', $option, $_value ); return true; } return false; } /** * Removes option by name. Prevents removal of protected WordPress options. * * @package WordPress * @subpackage Option * @since 1.2.0 * * @uses do_action() Calls 'delete_option' hook before option is deleted. * @uses do_action() Calls 'deleted_option' and 'delete_option_$option' hooks on success. * * @param string $option Name of option to remove. Expected to not be SQL-escaped. * @return bool True, if option is successfully deleted. False on failure. */ function delete_option( $option ) { global $wpdb; wp_protect_special_option( $option ); // Get the ID, if no ID then return $row = $wpdb->get_row( $wpdb->prepare( "SELECT autoload FROM $wpdb->options WHERE option_name = %s", $option ) ); if ( is_null( $row ) ) return false; do_action( 'delete_option', $option ); $result = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->options WHERE option_name = %s", $option) ); if ( ! defined( 'WP_INSTALLING' ) ) { if ( 'yes' == $row->autoload ) { $alloptions = wp_load_alloptions(); if ( is_array( $alloptions ) && isset( $alloptions[$option] ) ) { unset( $alloptions[$option] ); wp_cache_set( 'alloptions', $alloptions, 'options' ); } } else { wp_cache_delete( $option, 'options' ); } } if ( $result ) { do_action( "delete_option_$option", $option ); do_action( 'deleted_option', $option ); return true; } return false; } /** * Delete a transient * * @since 2.8.0 * @package WordPress * @subpackage Transient * * @uses do_action() Calls 'delete_transient_$transient' hook before transient is deleted. * @uses do_action() Calls 'deleted_transient' hook on success. * * @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; do_action( 'delete_transient_' . $transient, $transient ); if ( $_wp_using_ext_object_cache ) { $result = wp_cache_delete( $transient, 'transient' ); } else { $option_timeout = '_transient_timeout_' . $transient; $option = '_transient_' . $transient; $result = delete_option( $option ); if ( $result ) delete_option( $option_timeout ); } if ( $result ) do_action( 'deleted_transient', $transient ); return $result; } /** * Get the value of a transient * * If the transient does not exist or does not have a value, then the return value * will be false. * * @uses apply_filters() Calls 'pre_transient_$transient' hook before checking the transient. * Any value other than false will "short-circuit" the retrieval of the transient * and return the returned value. * @uses apply_filters() Calls 'transient_$option' hook, after checking the transient, with * the transient value. * * @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; $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_' . $transient; if ( ! defined( 'WP_INSTALLING' ) ) { // 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_' . $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, $value ); } /** * Set/update the value of a transient * * You do not need to serialize values. If the value needs to be serialized, then * it will be serialized before it is set. * * @since 2.8.0 * @package WordPress * @subpackage Transient * * @uses apply_filters() Calls 'pre_set_transient_$transient' hook to allow overwriting the * transient value to be stored. * @uses do_action() Calls 'set_transient_$transient' and 'setted_transient' hooks on success. * * @param string $transient Transient name. Expected to not be SQL-escaped. * @param mixed $value Transient value. Expected to not be SQL-escaped. * @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; $value = apply_filters( 'pre_set_transient_' . $transient, $value ); if ( $_wp_using_ext_object_cache ) { $result = wp_cache_set( $transient, $value, 'transient', $expiration ); } else { $transient_timeout = '_transient_timeout_' . $transient; $transient = '_transient_' . $transient; if ( false === get_option( $transient ) ) { $autoload = 'yes'; if ( $expiration ) { $autoload = 'no'; add_option( $transient_timeout, time() + $expiration, '', 'no' ); } $result = add_option( $transient, $value, '', $autoload ); } else { if ( $expiration ) update_option( $transient_timeout, time() + $expiration ); $result = update_option( $transient, $value ); } } if ( $result ) { do_action( 'set_transient_' . $transient ); do_action( 'setted_transient', $transient ); } return $result; } /** * 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 ); 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 ); $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 * * @param unknown $all * @return bool */ function wp_set_all_user_settings($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>/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; //TODO: Tidy this ghetto code up and make the debug code optional 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 meta_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 ( false === $test ) continue; if ( isset( $test['query'] ) ) $post_links[] = $link_test; elseif ( isset($test['path']) && ( $test['path'] != '/' ) && ($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' ); // Check to see if we can figure out the mime type from // the extension $url_parts = @parse_url( $url ); if ( false !== $url_parts ) { $extension = pathinfo( $url_parts['path'], PATHINFO_EXTENSION ); if ( !empty( $extension ) ) { foreach ( get_allowed_mime_types( ) as $exts => $mime ) { if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) { $type = $mime; break; } } } } 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 int $red (private) The number of Redirects followed, Upon 5 being hit, returns false. * @return bool|string False on failure and string of headers if HEAD request. */ function wp_get_http( $url, $file_path = false, $red = 1 ) { @set_time_limit( 60 ); if ( $red > 5 ) return false; $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']; // WP_HTTP no longer follows redirects for HEAD requests. if ( 'HEAD' == $options['method'] && in_array($headers['response'], array(301, 302)) && isset( $headers['location'] ) ) { return wp_get_http( $headers['location'], $file_path, ++$red ); } 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); clearstatcache(); 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 ) { if ( !empty( $deprecated ) ) _deprecated_argument( __FUNCTION__, '2.7' ); $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 $currentday, $previousday; if ( $currentday != $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. * * @since 0.71 * * @param array $array Array to used to walk while sanitizing contents. * @return array Sanitized $array. */ function add_magic_quotes( $array ) { foreach ( (array) $array as $k => $v ) { if ( is_array( $v ) ) { $array[$k] = add_magic_quotes( $v ); } else { $array[$k] = addslashes( $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']; } /** * Set up 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 unknown */ 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 = (array) 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( $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, '', array( 'response' => 404 ) ); } 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' ); $output = ''; $public = get_option( 'blog_public' ); if ( '0' == $public ) { $output .= "User-agent: *\n"; $output .= "Disallow: /\n"; } else { $output .= "User-agent: *\n"; $output .= "Disallow:\n"; } echo apply_filters('robots_txt', $output, $public); } /** * 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(); if ( ! defined( 'WP_INSTALLING' ) ) { $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 ); $wp_tables = $wpdb->tables(); // 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 ( $wp_tables as $table ) { // If one of the WP tables exist, then we are in an insane state. if ( in_array( $table, $tables ) ) { // The existence of custom user tables shouldn't suggest an insane state or prevent a clean install. if ( defined( 'CUSTOM_USER_TABLE' ) && CUSTOM_USER_TABLE == $table ) continue; if ( defined( 'CUSTOM_USER_META_TABLE' ) && CUSTOM_USER_META_TABLE == $table ) continue; // If visiting repair.php, return true and let it take over. if ( defined('WP_REPAIRING') ) return true; // Die with a DB error. $wpdb->error = sprintf( /*WP_I18N_NO_TABLES*/'One or more database tables are unavailable. The database may need to be <a href="%s">repaired</a>.'/*/WP_I18N_NO_TABLES*/, 'maint/repair.php?referrer=is_blog_installed' ); 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( '&', '&', $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 ); 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. True if path already exists. */ function wp_mkdir_p( $target ) { // from php.net/mkdir user contributed notes $target = str_replace( '//', '/', $target ); // safe mode fails with a trailing slash under certain PHP versions. $target = rtrim($target, '/'); // Use rtrim() instead of untrailingslashit to avoid formatting.php dependency. if ( empty($target) ) $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 ) { global $switched; $siteurl = get_option( 'siteurl' ); $upload_path = get_option( 'upload_path' ); $upload_path = trim($upload_path); $main_override = is_multisite() && defined( 'MULTISITE' ) && is_main_site(); if ( empty($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 ) . $upload_path; } if ( defined('UPLOADS') && !$main_override && ( !isset( $switched ) || $switched === false ) ) { $dir = ABSPATH . UPLOADS; $url = trailingslashit( $siteurl ) . UPLOADS; } if ( is_multisite() && !$main_override && ( !isset( $switched ) || $switched === false ) ) { if ( defined( 'BLOGUPLOADDIR' ) ) $dir = untrailingslashit(BLOGUPLOADDIR); $url = str_replace( UPLOADS, 'files', $url ); } $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 is passed three parameters, the first one is the directory, the * second is the filename, and the third is the extension. * * @since 2.5 * * @param string $dir * @param string $filename * @param mixed $unique_filename_callback Callback. * @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 callback if supplied. if ( $unique_filename_callback && is_callable( $unique_filename_callback ) ) { $filename = call_user_func( $unique_filename_callback, $dir, $name, $ext ); } 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 Never 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( $deprecated ) ) _deprecated_argument( __FUNCTION__, '2.0' ); 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; $upload_bits_error = apply_filters( 'wp_upload_bits', array( 'name' => $name, 'bits' => $bits, 'time' => $time ) ); if ( !is_array( $upload_bits_error ) ) { $upload[ 'error' ] = $upload_bits_error; 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 ); clearstatcache(); // Set correct file permissions $stat = @ stat( dirname( $new_file ) ); $perms = $stat['mode'] & 0007777; $perms = $perms & 0000666; @ chmod( $new_file, $perms ); clearstatcache(); // 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', 'm3a', 'm4a', 'm4b', 'mka', 'mp1', 'mp2', 'mp3', 'ogg', 'oga', 'ram', 'wav', 'wma' ), 'video' => array( 'asf', 'avi', 'divx', 'dv', 'flv', 'm4v', 'mkv', 'mov', 'mp4', 'mpeg', 'mpg', 'mpv', 'ogm', 'ogv', 'qt', 'rm', 'vob', 'wmv' ), 'document' => array( 'doc', 'docx', 'docm', 'dotm', 'odt', 'pages', 'pdf', 'rtf', 'wp', 'wpd' ), 'spreadsheet' => array( 'numbers', 'ods', 'xls', 'xlsx', 'xlsb', 'xlsm' ), 'interactive' => array( 'key', 'ppt', 'pptx', 'pptm', 'odp', 'swf' ), 'text' => array( 'asc', 'csv', 'tsv', 'txt' ), 'archive' => array( 'bz2', 'cab', 'dmg', 'gz', 'rar', 'sea', 'sit', 'sqx', 'tar', 'tgz', 'zip' ), 'code' => array( 'css', 'htm', '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' ); } /** * Attempt to determine the real file type of a file. * If unable to, the file name extension will be used to determine type. * * If it's determined that the extension does not match the file's real type, * then the "proper_filename" value will be set with a proper filename and extension. * * Currently this function only supports validating images known to getimagesize(). * * @since 3.0.0 * * @param string $file Full path to the image. * @param string $filename The filename of the image (may differ from $file due to $file being in a tmp directory) * @param array $mimes Optional. Key is the file extension with value as the mime type. * @return array Values for the extension, MIME, and either a corrected filename or false if original $filename is valid */ function wp_check_filetype_and_ext( $file, $filename, $mimes = null ) { $proper_filename = false; // Do basic extension validation and MIME mapping $wp_filetype = wp_check_filetype( $filename, $mimes ); extract( $wp_filetype ); // We can't do any further validation without a file to work with if ( ! file_exists( $file ) ) return compact( 'ext', 'type', 'proper_filename' ); // We're able to validate images using GD if ( $type && 0 === strpos( $type, 'image/' ) && function_exists('getimagesize') ) { // Attempt to figure out what type of image it actually is $imgstats = @getimagesize( $file ); // If getimagesize() knows what kind of image it really is and if the real MIME doesn't match the claimed MIME if ( !empty($imgstats['mime']) && $imgstats['mime'] != $type ) { // This is a simplified array of MIMEs that getimagesize() can detect and their extensions // You shouldn't need to use this filter, but it's here just in case $mime_to_ext = apply_filters( 'getimagesize_mimes_to_exts', array( 'image/jpeg' => 'jpg', 'image/png' => 'png', 'image/gif' => 'gif', 'image/bmp' => 'bmp', 'image/tiff' => 'tif', ) ); // Replace whatever is after the last period in the filename with the correct extension if ( ! empty( $mime_to_ext[ $imgstats['mime'] ] ) ) { $filename_parts = explode( '.', $filename ); array_pop( $filename_parts ); $filename_parts[] = $mime_to_ext[ $imgstats['mime'] ]; $new_filename = implode( '.', $filename_parts ); if ( $new_filename != $filename ) $proper_filename = $new_filename; // Mark that it changed // Redefine the extension / MIME $wp_filetype = wp_check_filetype( $new_filename, $mimes ); extract( $wp_filetype ); } } } // Let plugins try and validate other types of files // Should return an array in the style of array( 'ext' => $ext, 'type' => $type, 'proper_filename' => $proper_filename ) return apply_filters( 'wp_check_filetype_and_ext', compact( 'ext', 'type', 'proper_filename' ), $file, $filename, $mimes ); } /** * 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|asc|c|cc|h' => 'text/plain', 'csv' => 'text/csv', 'tsv' => 'text/tab-separated-values', 'rtx' => 'text/richtext', 'css' => 'text/css', 'htm|html' => 'text/html', 'mp3|m4a|m4b' => 'audio/mpeg', 'mp4|m4v' => 'video/mp4', 'ra|ram' => 'audio/x-realaudio', 'wav' => 'audio/wav', 'ogg|oga' => 'audio/ogg', 'ogv' => 'video/ogg', 'mid|midi' => 'audio/midi', 'wma' => 'audio/wma', 'mka' => 'audio/x-matroska', 'mkv' => 'video/x-matroska', 'rtf' => 'application/rtf', 'js' => 'application/javascript', 'pdf' => 'application/pdf', 'doc|docx' => 'application/msword', 'pot|pps|ppt|pptx|ppam|pptm|sldm|ppsm|potm' => 'application/vnd.ms-powerpoint', 'wri' => 'application/vnd.ms-write', 'xla|xls|xlsx|xlt|xlw|xlam|xlsb|xlsm|xltm' => 'application/vnd.ms-excel', 'mdb' => 'application/vnd.ms-access', 'mpp' => 'application/vnd.ms-project', 'docm|dotm' => 'application/vnd.ms-word', 'pptx|sldx|ppsx|potx' => 'application/vnd.openxmlformats-officedocument.presentationml', 'xlsx|xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml', 'docx|dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml', 'onetoc|onetoc2|onetmp|onepkg' => 'application/onenote', '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', // wordperfect formats 'wp|wpd' => 'application/wordperfect', ) ); } 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: “%s” 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: “%s” has failed.' ), 'get_cat_name' ); $trans['update']['category'] = array( __( 'Your attempt to edit this category: “%s” has failed.' ), 'get_cat_name' ); $trans['delete']['comment'] = array( __( 'Your attempt to delete this comment: “%s” has failed.' ), 'use_id' ); $trans['unapprove']['comment'] = array( __( 'Your attempt to unapprove this comment: “%s” has failed.' ), 'use_id' ); $trans['approve']['comment'] = array( __( 'Your attempt to approve this comment: “%s” has failed.' ), 'use_id' ); $trans['update']['comment'] = array( __( 'Your attempt to edit this comment: “%s” 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: “%s” has failed.' ), 'use_id' ); $trans['update']['bookmark'] = array( __( 'Your attempt to edit this link: “%s” 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: “%s” has failed.' ), 'get_the_title' ); $trans['update']['page'] = array( __( 'Your attempt to edit this page: “%s” has failed.' ), 'get_the_title' ); $trans['edit']['plugin'] = array( __( 'Your attempt to edit this plugin file: “%s” has failed.' ), 'use_id' ); $trans['activate']['plugin'] = array( __( 'Your attempt to activate this plugin: “%s” has failed.' ), 'use_id' ); $trans['deactivate']['plugin'] = array( __( 'Your attempt to deactivate this plugin: “%s” has failed.' ), 'use_id' ); $trans['upgrade']['plugin'] = array( __( 'Your attempt to upgrade this plugin: “%s” 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: “%s” has failed.' ), 'get_the_title' ); $trans['update']['post'] = array( __( 'Your attempt to edit this post: “%s” 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: “%s” has failed.' ), 'get_the_author_meta', 'display_name' ); $trans['update']['profile'] = array( __( 'Your attempt to modify the profile for: “%s” 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: “%s” has failed.' ), 'use_id' ); $trans['edit']['theme'] = array( __( 'Your attempt to edit this theme file: “%s” has failed.' ), 'use_id' ); $trans['switch']['theme'] = array( __( 'Your attempt to switch to this theme: “%s” 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. * * 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() ) { if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) die('-1'); if ( function_exists( 'apply_filters' ) ) { $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler'); } else { $function = '_default_wp_die_handler'; } call_user_func( $function, $message, $title, $args ); } /** * Kill WordPress execution and display HTML message with error message. * * This is the default handler for wp_die if you want a custom one for your * site then you can overload using the wp_die_handler filter in wp_die * * @since 3.0.0 * @access private * * @param string $message Error message. * @param string $title Error title. * @param string|array $args Optional arguements to control behaviour. */ function _default_wp_die_handler( $message, $title = '', $args = array() ) { $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? __('« Back') : '« 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 › Error') : 'WordPress › Error'; $text_direction = 'ltr'; if ( isset($r['text_direction']) && 'rtl' == $r['text_direction'] ) $text_direction = 'rtl'; elseif ( function_exists( 'is_rtl' ) && is_rtl() ) $text_direction = 'rtl'; ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <!-- Ticket #11289, IE bug fix: always pad the error page with enough characters such that it is greater than 512 bytes, even after gzip compression abcdefghijklmnopqrstuvwxyz1234567890aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz11223344556677889900abacbcbdcdcededfefegfgfhghgihihjijikjkjlklkmlmlnmnmononpopoqpqprqrqsrsrtstsubcbcdcdedefefgfabcadefbghicjkldmnoepqrfstugvwxhyz1i234j567k890laabmbccnddeoeffpgghqhiirjjksklltmmnunoovppqwqrrxsstytuuzvvw0wxx1yyz2z113223434455666777889890091abc2def3ghi4jkl5mno6pqr7stu8vwx9yz11aab2bcc3dd4ee5ff6gg7hh8ii9j0jk1kl2lmm3nnoo4p5pq6qrr7ss8tt9uuvv0wwx1x2yyzz13aba4cbcb5dcdc6dedfef8egf9gfh0ghg1ihi2hji3jik4jkj5lkl6kml7mln8mnm9ono --> <html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) && function_exists( 'is_rtl' ) ) language_attributes(); else echo "dir='$text_direction'"; ?>> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title><?php echo $title ?> 'icon_mrgreen.gif', ':neutral:' => 'icon_neutral.gif', ':twisted:' => 'icon_twisted.gif', ':arrow:' => 'icon_arrow.gif', ':shock:' => 'icon_eek.gif', ':smile:' => 'icon_smile.gif', ':???:' => 'icon_confused.gif', ':cool:' => 'icon_cool.gif', ':evil:' => 'icon_evil.gif', ':grin:' => 'icon_biggrin.gif', ':idea:' => 'icon_idea.gif', ':oops:' => 'icon_redface.gif', ':razz:' => 'icon_razz.gif', ':roll:' => 'icon_rolleyes.gif', ':wink:' => 'icon_wink.gif', ':cry:' => 'icon_cry.gif', ':eek:' => 'icon_surprised.gif', ':lol:' => 'icon_lol.gif', ':mad:' => 'icon_mad.gif', ':sad:' => 'icon_sad.gif', '8-)' => 'icon_cool.gif', '8-O' => 'icon_eek.gif', ':-(' => 'icon_sad.gif', ':-)' => 'icon_smile.gif', ':-?' => 'icon_confused.gif', ':-D' => 'icon_biggrin.gif', ':-P' => 'icon_razz.gif', ':-o' => 'icon_surprised.gif', ':-x' => 'icon_mad.gif', ':-|' => 'icon_neutral.gif', ';-)' => 'icon_wink.gif', '8)' => 'icon_cool.gif', '8O' => 'icon_eek.gif', ':(' => 'icon_sad.gif', ':)' => 'icon_smile.gif', ':?' => 'icon_confused.gif', ':D' => 'icon_biggrin.gif', ':P' => 'icon_razz.gif', ':o' => 'icon_surprised.gif', ':x' => 'icon_mad.gif', ':|' => 'icon_neutral.gif', ';)' => 'icon_wink.gif', ':!:' => 'icon_exclaim.gif', ':?:' => 'icon_question.gif', ); } if (count($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; } /** * Clean up an array, comma- or space-separated list of IDs * * @since 3.0.0 * * @param array|string $list * @return array Sanitized array of IDs */ function wp_parse_id_list( $list ) { if ( !is_array($list) ) $list = preg_split('/[\s,]+/', $list); return array_unique(array_map('absint', $list)); } /** * Extract a slice of an array, given a list of keys * * @since 3.1.0 * * @param array $array The original array * @param array $keys The list of keys * @return array The array slice */ function wp_array_slice_assoc( $array, $keys ) { $slice = array(); foreach ( $keys as $key ) if ( isset( $array[ $key ] ) ) $slice[ $key ] = $array[ $key ]; return $slice; } /** * Filters a list of objects, based on a set of key => value arguments * * @since 3.0.0 * * @param array $list An array of objects to filter * @param array $args An array of key => value arguments to match against each object * @param string $operator The logical operation to perform. 'or' means only one element * from the array needs to match; 'and' means all elements must match. The default is 'and'. * @param bool|string $field A field from the object to place instead of the entire object * @return array A list of objects or object fields */ function wp_filter_object_list( $list, $args = array(), $operator = 'and', $field = false ) { $list = wp_list_filter( $list, $args, $operator ); if ( $field ) $list = wp_list_pluck( $list, $field ); return $list; } /** * Filters a list of objects, based on a set of key => value arguments * * @since 3.1.0 * * @param array $list An array of objects to filter * @param array $args An array of key => value arguments to match against each object * @param string $operator The logical operation to perform. 'or' means only one element * from the array needs to match; 'and' means all elements must match. The default is 'and'. * @return array */ function wp_list_filter( $list, $args = array(), $operator = 'and' ) { if ( empty( $args ) ) return $list; $count = count( $args ); $filtered = array(); foreach ( $list as $key => $obj ) { $matched = count( array_intersect_assoc( (array) $obj, $args ) ); if ( ('and' == $operator && $matched == $count) || ('or' == $operator && $matched <= $count) ) { $filtered[$key] = $obj; } } return $filtered; } /** * Pluck a certain field out of each object in a list * * @since 3.1.0 * * @param array $list A list of objects or arrays * @param int|string $field A field from the object to place instead of the entire object * @return array */ function wp_list_pluck( $list, $field ) { foreach ( $list as $key => $value ) { $value = (array) $value; $list[ $key ] = $value[ $field ]; } return $list; } /** * 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 2.9.0 */ 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' ), 'edit_theme_options', '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 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' ); ?> > Database Error

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deprecated since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) ); else trigger_error( sprintf( __('%1$s is deprecated 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 * @subpackage Debug * @since 2.5.0 * @access private * * @uses do_action() Calls 'deprecated_file_included' and passes the file name, what to use instead, * the version in which the file was deprecated, and any message regarding the change. * @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 * @param string $message Optional. A message regarding the change */ function _deprecated_file( $file, $version, $replacement = null, $message = '' ) { do_action( 'deprecated_file_included', $file, $replacement, $version, $message ); // Allow plugin to filter the output error trigger if ( WP_DEBUG && apply_filters( 'deprecated_file_trigger_error', true ) ) { $message = empty( $message ) ? '' : ' ' . $message; if ( ! is_null( $replacement ) ) trigger_error( sprintf( __('%1$s is deprecated since version %2$s! Use %3$s instead.'), $file, $version, $replacement ) . $message ); else trigger_error( sprintf( __('%1$s is deprecated since version %2$s with no alternative available.'), $file, $version ) . $message ); } } /** * Marks a function argument as deprecated and informs when it has been used. * * This function is to be used whenever a deprecated function argument is used. * Before this function is called, the argument must be checked for whether it was * used by comparing it to its default value or evaluating whether it is empty. * For example: * * if ( !empty($deprecated) ) * _deprecated_argument( __FUNCTION__, '3.0' ); * * * There is a hook deprecated_argument_run that will be called that can be used * to get the backtrace up to what file and function used the deprecated * argument. * * The current behavior is to trigger an user error if WP_DEBUG is true. * * @package WordPress * @subpackage Debug * @since 3.0.0 * @access private * * @uses do_action() Calls 'deprecated_argument_run' and passes the function name, a message on the change, * and the version in which the argument was deprecated. * @uses apply_filters() Calls 'deprecated_argument_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 argument used * @param string $message Optional. A message regarding the change. */ function _deprecated_argument( $function, $version, $message = null ) { do_action( 'deprecated_argument_run', $function, $message, $version ); // Allow plugin to filter the output error trigger if ( WP_DEBUG && apply_filters( 'deprecated_argument_trigger_error', true ) ) { if ( ! is_null( $message ) ) trigger_error( sprintf( __('%1$s was called with an argument that is deprecated since version %2$s! %3$s'), $function, $version, $message ) ); else trigger_error( sprintf( __('%1$s was called with an argument that is deprecated since version %2$s with no alternative available.'), $function, $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 = is_ssl() ? 'https://' : 'http://'; $url = preg_replace('|/wp-admin/.*|i', '', $schema . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']); } return rtrim($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 $current_suspend; } /** * Retrieve site option value based on name of option. * * @see get_option() * @package WordPress * @subpackage Option * @since 2.8.0 * * @uses apply_filters() Calls 'pre_site_option_$option' before checking the option. * Any value other than false will "short-circuit" the retrieval of the option * and return the returned value. * @uses apply_filters() Calls 'site_option_$option', after checking the option, with * the option value. * * @param string $option Name of option to retrieve. Expected to not be SQL-escaped. * @param mixed $default Optional value to return if option doesn't exist. Default false. * @param bool $use_cache Whether to use cache. Multisite only. Default true. * @return mixed Value set for the option. */ function get_site_option( $option, $default = false, $use_cache = true ) { global $wpdb; // Allow plugins to short-circuit site options. $pre = apply_filters( 'pre_site_option_' . $option, false ); if ( false !== $pre ) return $pre; if ( !is_multisite() ) { $value = get_option($option, $default); } else { $cache_key = "{$wpdb->siteid}:$option"; if ( $use_cache ) $value = wp_cache_get($cache_key, 'site-options'); if ( !isset($value) || (false === $value) ) { $row = $wpdb->get_row( $wpdb->prepare("SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ); // Has to be get_row instead of get_var because of funkiness with 0, false, null values if ( is_object( $row ) ) $value = $row->meta_value; else $value = $default; $value = maybe_unserialize( $value ); wp_cache_set( $cache_key, $value, 'site-options' ); } } return apply_filters( 'site_option_' . $option, $value ); } /** * Add a new site option. * * @see add_option() * @package WordPress * @subpackage Option * @since 2.8.0 * * @uses apply_filters() Calls 'pre_add_site_option_$option' hook to allow overwriting the * option value to be stored. * @uses do_action() Calls 'add_site_option_$option' and 'add_site_option' hooks on success. * * @param string $option Name of option to add. Expected to not be SQL-escaped. * @param mixed $value Optional. Option value, can be anything. Expected to not be SQL-escaped. * @return bool False if option was not added and true if option was added. */ function add_site_option( $option, $value ) { global $wpdb; $value = apply_filters( 'pre_add_site_option_' . $option, $value ); if ( !is_multisite() ) { $result = add_option( $option, $value ); } else { $cache_key = "{$wpdb->siteid}:$option"; if ( $wpdb->get_row( $wpdb->prepare( "SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ) ) return update_site_option( $option, $value ); $value = sanitize_option( $option, $value ); wp_cache_set( $cache_key, $value, 'site-options' ); $_value = $value; $value = maybe_serialize($value); $result = $wpdb->insert( $wpdb->sitemeta, array('site_id' => $wpdb->siteid, 'meta_key' => $option, 'meta_value' => $value ) ); $value = $_value; } do_action( "add_site_option_{$option}", $option, $value ); do_action( "add_site_option", $option, $value ); return $result; } /** * Removes site option by name. * * @see delete_option() * @package WordPress * @subpackage Option * @since 2.8.0 * * @uses do_action() Calls 'pre_delete_site_option_$option' hook before option is deleted. * @uses do_action() Calls 'delete_site_option' and 'delete_site_option_$option' * hooks on success. * * @param string $option Name of option to remove. Expected to not be SQL-escaped. * @return bool True, if succeed. False, if failure. */ function delete_site_option( $option ) { global $wpdb; // ms_protect_special_option( $option ); @todo do_action( 'pre_delete_site_option_' . $option ); if ( !is_multisite() ) { $result = delete_option( $option ); } else { $row = $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM {$wpdb->sitemeta} WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ); if ( is_null( $row ) || !$row->meta_id ) return false; $cache_key = "{$wpdb->siteid}:$option"; wp_cache_delete( $cache_key, 'site-options' ); $result = $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->sitemeta} WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ); } if ( $result ) { do_action( "delete_site_option_{$option}", $option ); do_action( "delete_site_option", $option ); return true; } return false; } /** * Update the value of a site option that was already added. * * @see update_option() * @since 2.8.0 * @package WordPress * @subpackage Option * * @uses apply_filters() Calls 'pre_update_site_option_$option' hook to allow overwriting the * option value to be stored. * @uses do_action() Calls 'update_site_option_$option' and 'update_site_option' hooks on success. * * @param string $option Name of option. Expected to not be SQL-escaped. * @param mixed $value Option value. Expected to not be SQL-escaped. * @return bool False if value was not updated and true if value was updated. */ function update_site_option( $option, $value ) { global $wpdb; $oldvalue = get_site_option( $option ); $value = apply_filters( 'pre_update_site_option_' . $option, $value, $oldvalue ); if ( $value === $oldvalue ) return false; if ( !is_multisite() ) { $result = update_option( $option, $value ); } else { $cache_key = "{$wpdb->siteid}:$option"; if ( $value && !$wpdb->get_row( $wpdb->prepare( "SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ) ) return add_site_option( $option, $value ); $value = sanitize_option( $option, $value ); wp_cache_set( $cache_key, $value, 'site-options' ); $_value = $value; $value = maybe_serialize( $value ); $result = $wpdb->update( $wpdb->sitemeta, array( 'meta_value' => $value ), array( 'site_id' => $wpdb->siteid, 'meta_key' => $option ) ); $value = $_value; } if ( $result ) { do_action( "update_site_option_{$option}", $option, $value ); do_action( "update_site_option", $option, $value ); return true; } return false; } /** * Delete a site transient * * @since 2.9.0 * @package WordPress * @subpackage Transient * * @uses do_action() Calls 'delete_site_transient_$transient' hook before transient is deleted. * @uses do_action() Calls 'deleted_site_transient' hook on success. * * @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; do_action( 'delete_site_transient_' . $transient, $transient ); if ( $_wp_using_ext_object_cache ) { $result = wp_cache_delete( $transient, 'site-transient' ); } else { $option_timeout = '_site_transient_timeout_' . $transient; $option = '_site_transient_' . $transient; $result = delete_site_option( $option ); if ( $result ) delete_site_option( $option_timeout ); } if ( $result ) do_action( 'deleted_site_transient', $transient ); return $result; } /** * Get the value of a site transient * * If the transient does not exist or does not have a value, then the return value * will be false. * * @see get_transient() * @since 2.9.0 * @package WordPress * @subpackage Transient * * @uses apply_filters() Calls 'pre_site_transient_$transient' hook before checking the transient. * Any value other than false will "short-circuit" the retrieval of the transient * and return the returned value. * @uses apply_filters() Calls 'site_transient_$option' hook, after checking the transient, with * the transient value. * * @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; $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 { // Core transients that do not have a timeout. Listed here so querying timeouts can be avoided. $no_timeout = array('update_core', 'update_plugins', 'update_themes'); $transient_option = '_site_transient_' . $transient; if ( ! in_array( $transient, $no_timeout ) ) { $transient_timeout = '_site_transient_timeout_' . $transient; $timeout = get_site_option( $transient_timeout ); if ( false !== $timeout && $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, $value ); } /** * Set/update the value of a site transient * * You do not need to serialize values, if the value needs to be serialize, then * it will be serialized before it is set. * * @see set_transient() * @since 2.9.0 * @package WordPress * @subpackage Transient * * @uses apply_filters() Calls 'pre_set_site_transient_$transient' hook to allow overwriting the * transient value to be stored. * @uses do_action() Calls 'set_site_transient_$transient' and 'setted_site_transient' hooks on success. * * @param string $transient Transient name. Expected to not be SQL-escaped. * @param mixed $value Transient value. Expected to not be SQL-escaped. * @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; $value = apply_filters( 'pre_set_site_transient_' . $transient, $value ); if ( $_wp_using_ext_object_cache ) { $result = wp_cache_set( $transient, $value, 'site-transient', $expiration ); } else { $transient_timeout = '_site_transient_timeout_' . $transient; $transient = '_site_transient_' . $transient; if ( false === get_site_option( $transient ) ) { if ( $expiration ) add_site_option( $transient_timeout, time() + $expiration ); $result = add_site_option( $transient, $value ); } else { if ( $expiration ) update_site_option( $transient_timeout, time() + $expiration ); $result = update_site_option( $transient, $value ); } } if ( $result ) { do_action( 'set_site_transient_' . $transient ); do_action( 'setted_site_transient', $transient ); } return $result; } /** * is main site * * * @since 3.0.0 * @package WordPress * * @param int $blog_id optional blog id to test (default current blog) * @return bool True if not multisite or $blog_id is main site */ function is_main_site( $blog_id = '' ) { global $current_site, $current_blog; if ( !is_multisite() ) return true; if ( !$blog_id ) $blog_id = $current_blog->blog_id; return $blog_id == $current_site->blog_id; } /** * Whether global terms are enabled. * * * @since 3.0.0 * @package WordPress * * @return bool True if multisite and global terms enabled */ function global_terms_enabled() { if ( ! is_multisite() ) return false; static $global_terms = null; if ( is_null( $global_terms ) ) { $filter = apply_filters( 'global_terms_enabled', null ); if ( ! is_null( $filter ) ) $global_terms = (bool) $filter; else $global_terms = (bool) get_site_option( 'global_terms_enabled', false ); } return $global_terms; } /** * gmt_offset modification for smart timezone handling * * Overrides the gmt_offset option if we have a timezone_string available * * @since 2.8.0 * * @return float|bool */ function wp_timezone_override_offset() { if ( !wp_timezone_supported() ) { return false; } if ( !$timezone_string = get_option( 'timezone_string' ) ) { return false; } $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 * * @since 2.9.0 * * @return bool */ function wp_timezone_supported() { $support = false; if ( function_exists( 'date_create' ) && 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 ); } /** * {@internal Missing Short Description}} * * @since 2.9.0 * * @param unknown_type $a * @param unknown_type $b * @return int */ 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 * * @since 2.9.0 * * @param string $selected_zone Selected Zone * @return string */ 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] ), 1 => ( isset( $zone[1] ) && $zone[1] ), 2 => ( isset( $zone[2] ) && $zone[2] ), ); $exists[3] = ( $exists[0] && 'Etc' !== $zone[0] ); $exists[4] = ( $exists[1] && $exists[3] ); $exists[5] = ( $exists[2] && $exists[3] ); $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[] = ''; } 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[] = ''; } // 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[] = '"; // Close continent optgroup if ( !empty( $zone['city'] ) && ( !isset($zonen[$key + 1]) || (isset( $zonen[$key + 1] ) && $zonen[$key + 1]['continent'] !== $zone['continent']) ) ) { $structure[] = ''; } } // Do UTC $structure[] = ''; $selected = ''; if ( 'UTC' === $selected_zone ) $selected = 'selected="selected" '; $structure[] = ''; $structure[] = ''; // Do manual UTC offsets $structure[] = ''; $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[] = '"; } $structure[] = ''; 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 2.8.0 * * @param string $str * @return string */ function _cleanup_header_comment($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 */ 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 array $default_headers Default metadata headers * @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, (array) $default_headers ); } else { $all_headers = $default_headers; } foreach ( $all_headers as $field => $regex ) { preg_match( '/^[\s\/*#]*' . 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 * * @access private * @since 2.9.0 * * @param string $t * @return string */ function _search_terms_tidy($t) { return trim($t, "\"'\n\r "); } /** * Returns true * * Useful for returning true to filters easily * * @since 3.0.0 * @see __return_false() * @return bool true */ function __return_true() { return true; } /** * Returns false * * Useful for returning false to filters easily * * @since 3.0.0 * @see __return_true() * @return bool false */ function __return_false() { return false; } /** * Returns 0 * * Useful for returning 0 to filters easily * * @since 3.0.0 * @see __return_zero() * @return int 0 */ function __return_zero() { return 0; } /** * Returns an empty array * * Useful for returning an empty array to filters easily * * @since 3.0.0 * @see __return_zero() * @return array Empty array */ function __return_empty_array() { return array(); } /** * Send a HTTP header to disable content type sniffing in browsers which support it. * * @link http://blogs.msdn.com/ie/archive/2008/07/02/ie8-security-part-v-comprehensive-protection.aspx * @link http://src.chromium.org/viewvc/chrome?view=rev&revision=6985 * * @since 3.0.0 * @return none */ function send_nosniff_header() { @header( 'X-Content-Type-Options: nosniff' ); } /** * Returns a MySQL expression for selecting the week number based on the start_of_week option. * * @internal * @since 3.0.0 * @param string $column * @return string */ function _wp_mysql_week( $column ) { switch ( $start_of_week = (int) get_option( 'start_of_week' ) ) { default : case 0 : return "WEEK( $column, 0 )"; case 1 : return "WEEK( $column, 1 )"; case 2 : case 3 : case 4 : case 5 : case 6 : return "WEEK( DATE_SUB( $column, INTERVAL $start_of_week DAY ), 0 )"; } } /** * Finds hierarchy loops using a callback function that maps object IDs to parent IDs. * * @since 3.1.0 * @access private * * @param callback $callback function that accepts ( ID, $callback_args ) and outputs parent_ID * @param $start The ID to start the loop check at * @param $start_parent the parent_ID of $start to use instead of calling $callback( $start ). Use null to always use $callback * @param array $callback_args optional additional arguments to send to $callback * @return array IDs of all members of loop */ function wp_find_hierarchy_loop( $callback, $start, $start_parent, $callback_args = array() ) { $override = is_null( $start_parent ) ? array() : array( $start => $start_parent ); if ( !$arbitrary_loop_member = wp_find_hierarchy_loop_tortoise_hare( $callback, $start, $override, $callback_args ) ) return array(); return wp_find_hierarchy_loop_tortoise_hare( $callback, $arbitrary_loop_member, $override, $callback_args, true ); } /** * Uses the "The Tortoise and the Hare" algorithm to detect loops. * * For every step of the algorithm, the hare takes two steps and the tortoise one. * If the hare ever laps the tortoise, there must be a loop. * * @since 3.1.0 * @access private * * @param callback $callback function that accupts ( ID, callback_arg, ... ) and outputs parent_ID * @param $start The ID to start the loop check at * @param array $override an array of ( ID => parent_ID, ... ) to use instead of $callback * @param array $callback_args optional additional arguments to send to $callback * @param bool $_return_loop Return loop members or just detect presence of loop? * Only set to true if you already know the given $start is part of a loop * (otherwise the returned array might include branches) * @return mixed scalar ID of some arbitrary member of the loop, or array of IDs of all members of loop if $_return_loop */ function wp_find_hierarchy_loop_tortoise_hare( $callback, $start, $override = array(), $callback_args = array(), $_return_loop = false ) { $tortoise = $hare = $evanescent_hare = $start; $return = array(); // Set evanescent_hare to one past hare // Increment hare two steps while ( $tortoise && ( $evanescent_hare = isset( $override[$hare] ) ? $override[$hare] : call_user_func_array( $callback, array_merge( array( $hare ), $callback_args ) ) ) && ( $hare = isset( $override[$evanescent_hare] ) ? $override[$evanescent_hare] : call_user_func_array( $callback, array_merge( array( $evanescent_hare ), $callback_args ) ) ) ) { if ( $_return_loop ) $return[$tortoise] = $return[$evanescent_hare] = $return[$hare] = true; // tortoise got lapped - must be a loop if ( $tortoise == $evanescent_hare || $tortoise == $hare ) return $_return_loop ? $return : $tortoise; // Increment tortoise by one step $tortoise = isset( $override[$tortoise] ) ? $override[$tortoise] : call_user_func_array( $callback, array_merge( array( $tortoise ), $callback_args ) ); } return false; } /** * Set the display status of the admin bar * * This can be called immediately upon plugin load. It does not need to be called from a function hooked to the init action. * * @since 3.1.0 * * @param bool $show Whether to allow the admin bar to show. * @return void */ function show_admin_bar( $show ) { global $show_admin_bar; $show_admin_bar = (bool) $show; }