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<?php
/**
* Option API
*
* @package WordPress
*/
/**
* 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.
* @param mixed $default Optional. Default value to return if the option does not exist.
* @return mixed Value set for the option.
*/
function get_option( $option, $default = false ) {
global $wpdb;
$option = trim( $option );
if ( empty( $option ) )
return false;
// Allow plugins to short-circuit options.
$pre = apply_filters( 'pre_option_' . $option, false );
if ( false !== $pre )
return $pre;
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 apply_filters( 'default_option_' . $option, $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 apply_filters( 'default_option_' . $option, $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 apply_filters( 'default_option_' . $option, $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 persistent 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', 'ms_files_rewriting' );
$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 = 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, $_newvalue );
return true;
}
return false;
}
/**
* Add a new option.
*
* You do not need to serialize values. If the value needs to be serialized, then
* it will be serialized before it is inserted into the database. Remember,
* resources can not be serialized or added as an option.
*
* You can create options without values and then update the values later.
* Existing options will not be updated and checks are performed to ensure that you
* aren't adding a protected WordPress option. Care should be taken to not name
* options the same as the ones which are protected.
*
* @package WordPress
* @subpackage Option
* @since 1.0.0
*
* @uses do_action() Calls 'add_option' hook before adding the option.
* @uses do_action() Calls 'add_option_$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 bool False if option was not added and true if option was added.
*/
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 = 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 false;
$_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->delete( $wpdb->options, array( 'option_name' => $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;
if ( is_super_admin( $user->ID ) &&
! in_array( get_current_blog_id(), array_keys( get_blogs_of_user( $user->ID ) ) )
)
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() + YEAR_IN_SECONDS, SITECOOKIEPATH );
setcookie( 'wp-settings-time-' . $user->ID, time(), time() + YEAR_IN_SECONDS, 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;
if ( is_super_admin( $user->ID ) &&
! in_array( get_current_blog_id(), array_keys( get_blogs_of_user( $user->ID ) ) )
)
return;
$_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-' . $user->ID, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH);
}
/**
* Retrieve site option value based on name of option.
*
* @see get_option()
* @package WordPress
* @subpackage Option
* @since 2.8.0
*
* @uses apply_filters() Calls 'pre_site_option_$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() ) {
$default = apply_filters( 'default_site_option_' . $option, $default );
$value = get_option($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;
$value = maybe_unserialize( $value );
wp_cache_set( $cache_key, $value, 'site-options' );
} else {
$value = apply_filters( 'default_site_option_' . $option, $default );
}
}
}
return apply_filters( 'site_option_' . $option, $value );
}
/**
* Add a new site option.
*
* Existing options will not be updated. Note that prior to 3.3 this wasn't the case.
*
* @see add_option()
* @package WordPress
* @subpackage Option
* @since 2.8.0
*
* @uses apply_filters() Calls 'pre_add_site_option_$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 ( false !== get_site_option( $option ) )
return false;
$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;
}
if ( $result ) {
do_action( "add_site_option_{$option}", $option, $value );
do_action( "add_site_option", $option, $value );
return true;
}
return false;
}
/**
* Removes site option by name.
*
* @see delete_option()
* @package WordPress
* @subpackage Option
* @since 2.8.0
*
* @uses do_action() Calls 'pre_delete_site_option_$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->delete( $wpdb->sitemeta, array( 'meta_key' => $option, 'site_id' => $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 ( false === $oldvalue )
return add_site_option( $option, $value );
if ( !is_multisite() ) {
$result = update_option( $option, $value );
} else {
$value = sanitize_option( $option, $value );
$cache_key = "{$wpdb->siteid}:$option";
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, $oldvalue );
do_action( "update_site_option", $option, $value, $oldvalue );
return true;
}
return false;
}
/**
* Delete a site transient.
*
* @since 2.9.0
* @package WordPress
* @subpackage Transient
*
* @uses do_action() Calls 'delete_site_transient_$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;
}
