/** * Defines constants and global variables that can be overridden, generally in wp-config.php. * * @package WordPress */ /** * Defines initial WordPress constants. * * @see wp_debug_mode() * * @since 3.0.0 * * @global int $blog_id The current site ID. * @global string $wp_version The WordPress version string. */ function wp_initial_constants() { global $blog_id, $wp_version; /**#@+ * Constants for expressing human-readable data sizes in their respective number of bytes. * * @since 4.4.0 * @since 6.0.0 `PB_IN_BYTES`, `EB_IN_BYTES`, `ZB_IN_BYTES`, and `YB_IN_BYTES` were added. */ define( 'KB_IN_BYTES', 1024 ); define( 'MB_IN_BYTES', 1024 * KB_IN_BYTES ); define( 'GB_IN_BYTES', 1024 * MB_IN_BYTES ); define( 'TB_IN_BYTES', 1024 * GB_IN_BYTES ); define( 'PB_IN_BYTES', 1024 * TB_IN_BYTES ); define( 'EB_IN_BYTES', 1024 * PB_IN_BYTES ); define( 'ZB_IN_BYTES', 1024 * EB_IN_BYTES ); define( 'YB_IN_BYTES', 1024 * ZB_IN_BYTES ); /**#@-*/ // Start of run timestamp. if ( ! defined( 'WP_START_TIMESTAMP' ) ) { define( 'WP_START_TIMESTAMP', microtime( true ) ); } $current_limit = ini_get( 'memory_limit' ); $current_limit_int = wp_convert_hr_to_bytes( $current_limit ); // Define memory limits. if ( ! defined( 'WP_MEMORY_LIMIT' ) ) { if ( false === wp_is_ini_value_changeable( 'memory_limit' ) ) { define( 'WP_MEMORY_LIMIT', $current_limit ); } elseif ( is_multisite() ) { define( 'WP_MEMORY_LIMIT', '64M' ); } else { define( 'WP_MEMORY_LIMIT', '40M' ); } } if ( ! defined( 'WP_MAX_MEMORY_LIMIT' ) ) { if ( false === wp_is_ini_value_changeable( 'memory_limit' ) ) { define( 'WP_MAX_MEMORY_LIMIT', $current_limit ); } elseif ( -1 === $current_limit_int || $current_limit_int > 256 * MB_IN_BYTES ) { define( 'WP_MAX_MEMORY_LIMIT', $current_limit ); } elseif ( wp_convert_hr_to_bytes( WP_MEMORY_LIMIT ) > 256 * MB_IN_BYTES ) { define( 'WP_MAX_MEMORY_LIMIT', WP_MEMORY_LIMIT ); } else { define( 'WP_MAX_MEMORY_LIMIT', '256M' ); } } // Set memory limits. $wp_limit_int = wp_convert_hr_to_bytes( WP_MEMORY_LIMIT ); if ( -1 !== $current_limit_int && ( -1 === $wp_limit_int || $wp_limit_int > $current_limit_int ) ) { ini_set( 'memory_limit', WP_MEMORY_LIMIT ); } if ( ! isset( $blog_id ) ) { $blog_id = 1; } if ( ! defined( 'WP_CONTENT_DIR' ) ) { define( 'WP_CONTENT_DIR', ABSPATH . 'wp-content' ); // No trailing slash, full paths only - WP_CONTENT_URL is defined further down. } /* * Add define( 'WP_DEVELOPMENT_MODE', 'core' ), or define( 'WP_DEVELOPMENT_MODE', 'plugin' ), or * define( 'WP_DEVELOPMENT_MODE', 'theme' ), or define( 'WP_DEVELOPMENT_MODE', 'all' ) to wp-config.php * to signify development mode for WordPress core, a plugin, a theme, or all three types respectively. */ if ( ! defined( 'WP_DEVELOPMENT_MODE' ) ) { define( 'WP_DEVELOPMENT_MODE', '' ); } // Add define( 'WP_DEBUG', true ); to wp-config.php to enable display of notices during development. if ( ! defined( 'WP_DEBUG' ) ) { if ( wp_get_development_mode() || 'development' === wp_get_environment_type() ) { define( 'WP_DEBUG', true ); } else { define( 'WP_DEBUG', false ); } } /* * Add define( 'WP_DEBUG_DISPLAY', null ); to wp-config.php to use the globally configured setting * for 'display_errors' and not force errors to be displayed. Use false to force 'display_errors' off. */ if ( ! defined( 'WP_DEBUG_DISPLAY' ) ) { define( 'WP_DEBUG_DISPLAY', true ); } // Add define( 'WP_DEBUG_LOG', true ); to enable error logging to wp-content/debug.log. if ( ! defined( 'WP_DEBUG_LOG' ) ) { define( 'WP_DEBUG_LOG', false ); } if ( ! defined( 'WP_CACHE' ) ) { define( 'WP_CACHE', false ); } /* * Add define( 'SCRIPT_DEBUG', true ); to wp-config.php to enable loading of non-minified, * non-concatenated scripts and stylesheets. */ if ( ! defined( 'SCRIPT_DEBUG' ) ) { if ( ! empty( $wp_version ) ) { $develop_src = str_contains( $wp_version, '-src' ); } else { $develop_src = false; } define( 'SCRIPT_DEBUG', $develop_src ); } /** * Private */ if ( ! defined( 'MEDIA_TRASH' ) ) { define( 'MEDIA_TRASH', false ); } if ( ! defined( 'SHORTINIT' ) ) { define( 'SHORTINIT', false ); } // Constants for features added to WP that should short-circuit their plugin implementations. define( 'WP_FEATURE_BETTER_PASSWORDS', true ); /**#@+ * Constants for expressing human-readable intervals * in their respective number of seconds. * * Please note that these values are approximate and are provided for convenience. * For example, MONTH_IN_SECONDS wrongly assumes every month has 30 days and * YEAR_IN_SECONDS does not take leap years into account. * * If you need more accuracy please consider using the DateTime class (https://www.php.net/manual/en/class.datetime.php). * * @since 3.5.0 * @since 4.4.0 Introduced `MONTH_IN_SECONDS`. */ define( 'MINUTE_IN_SECONDS', 60 ); define( 'HOUR_IN_SECONDS', 60 * MINUTE_IN_SECONDS ); define( 'DAY_IN_SECONDS', 24 * HOUR_IN_SECONDS ); define( 'WEEK_IN_SECONDS', 7 * DAY_IN_SECONDS ); define( 'MONTH_IN_SECONDS', 30 * DAY_IN_SECONDS ); define( 'YEAR_IN_SECONDS', 365 * DAY_IN_SECONDS ); /**#@-*/ } /** * Defines plugin directory WordPress constants. * * Defines must-use plugin directory constants, which may be overridden in the sunrise.php drop-in. * * @since 3.0.0 */ function wp_plugin_directory_constants() { if ( ! defined( 'WP_CONTENT_URL' ) ) { define( 'WP_CONTENT_URL', get_option( 'siteurl' ) . '/wp-content' ); // Full URL - WP_CONTENT_DIR is defined further up. } /** * Allows for the plugins directory to be moved from the default location. * * @since 2.6.0 */ if ( ! defined( 'WP_PLUGIN_DIR' ) ) { define( 'WP_PLUGIN_DIR', WP_CONTENT_DIR . '/plugins' ); // Full path, no trailing slash. } /** * Allows for the plugins directory to be moved from the default location. * * @since 2.6.0 */ if ( ! defined( 'WP_PLUGIN_URL' ) ) { define( 'WP_PLUGIN_URL', WP_CONTENT_URL . '/plugins' ); // Full URL, no trailing slash. } /** * Allows for the plugins directory to be moved from the default location. * * @since 2.1.0 * @deprecated */ if ( ! defined( 'PLUGINDIR' ) ) { define( 'PLUGINDIR', 'wp-content/plugins' ); // Relative to ABSPATH. For back compat. } /** * Allows for the mu-plugins directory to be moved from the default location. * * @since 2.8.0 */ if ( ! defined( 'WPMU_PLUGIN_DIR' ) ) { define( 'WPMU_PLUGIN_DIR', WP_CONTENT_DIR . '/mu-plugins' ); // Full path, no trailing slash. } /** * Allows for the mu-plugins directory to be moved from the default location. * * @since 2.8.0 */ if ( ! defined( 'WPMU_PLUGIN_URL' ) ) { define( 'WPMU_PLUGIN_URL', WP_CONTENT_URL . '/mu-plugins' ); // Full URL, no trailing slash. } /** * Allows for the mu-plugins directory to be moved from the default location. * * @since 2.8.0 * @deprecated */ if ( ! defined( 'MUPLUGINDIR' ) ) { define( 'MUPLUGINDIR', 'wp-content/mu-plugins' ); // Relative to ABSPATH. For back compat. } } /** * Defines cookie-related WordPress constants. * * Defines constants after multisite is loaded. * * @since 3.0.0 */ function wp_cookie_constants() { /** * Used to guarantee unique hash cookies. * * @since 1.5.0 */ if ( ! defined( 'COOKIEHASH' ) ) { $siteurl = get_site_option( 'siteurl' ); if ( $siteurl ) { define( 'COOKIEHASH', md5( $siteurl ) ); } else { define( 'COOKIEHASH', '' ); } } /** * @since 2.0.0 */ if ( ! defined( 'USER_COOKIE' ) ) { define( 'USER_COOKIE', 'wordpressuser_' . COOKIEHASH ); } /** * @since 2.0.0 */ if ( ! defined( 'PASS_COOKIE' ) ) { define( 'PASS_COOKIE', 'wordpresspass_' . COOKIEHASH ); } /** * @since 2.5.0 */ if ( ! defined( 'AUTH_COOKIE' ) ) { define( 'AUTH_COOKIE', 'wordpress_' . COOKIEHASH ); } /** * @since 2.6.0 */ if ( ! defined( 'SECURE_AUTH_COOKIE' ) ) { define( 'SECURE_AUTH_COOKIE', 'wordpress_sec_' . COOKIEHASH ); } /** * @since 2.6.0 */ if ( ! defined( 'LOGGED_IN_COOKIE' ) ) { define( 'LOGGED_IN_COOKIE', 'wordpress_logged_in_' . COOKIEHASH ); } /** * @since 2.3.0 */ if ( ! defined( 'TEST_COOKIE' ) ) { define( 'TEST_COOKIE', 'wordpress_test_cookie' ); } /** * @since 1.2.0 */ if ( ! defined( 'COOKIEPATH' ) ) { define( 'COOKIEPATH', preg_replace( '|https?://[^/]+|i', '', get_option( 'home' ) . '/' ) ); } /** * @since 1.5.0 */ if ( ! defined( 'SITECOOKIEPATH' ) ) { define( 'SITECOOKIEPATH', preg_replace( '|https?://[^/]+|i', '', get_option( 'siteurl' ) . '/' ) ); } /** * @since 2.6.0 */ if ( ! defined( 'ADMIN_COOKIE_PATH' ) ) { define( 'ADMIN_COOKIE_PATH', SITECOOKIEPATH . 'wp-admin' ); } /** * @since 2.6.0 */ if ( ! defined( 'PLUGINS_COOKIE_PATH' ) ) { define( 'PLUGINS_COOKIE_PATH', preg_replace( '|https?://[^/]+|i', '', WP_PLUGIN_URL ) ); } /** * @since 2.0.0 * @since 6.6.0 The value has changed from false to an empty string. */ if ( ! defined( 'COOKIE_DOMAIN' ) ) { define( 'COOKIE_DOMAIN', '' ); } if ( ! defined( 'RECOVERY_MODE_COOKIE' ) ) { /** * @since 5.2.0 */ define( 'RECOVERY_MODE_COOKIE', 'wordpress_rec_' . COOKIEHASH ); } } /** * Defines SSL-related WordPress constants. * * @since 3.0.0 */ function wp_ssl_constants() { /** * @since 2.6.0 */ if ( ! defined( 'FORCE_SSL_ADMIN' ) ) { if ( 'https' === parse_url( get_option( 'siteurl' ), PHP_URL_SCHEME ) ) { define( 'FORCE_SSL_ADMIN', true ); } else { define( 'FORCE_SSL_ADMIN', false ); } } force_ssl_admin( FORCE_SSL_ADMIN ); /** * @since 2.6.0 * @deprecated 4.0.0 */ if ( defined( 'FORCE_SSL_LOGIN' ) && FORCE_SSL_LOGIN ) { force_ssl_admin( true ); } } /** * Defines functionality-related WordPress constants. * * @since 3.0.0 */ function wp_functionality_constants() { /** * @since 2.5.0 */ if ( ! defined( 'AUTOSAVE_INTERVAL' ) ) { define( 'AUTOSAVE_INTERVAL', MINUTE_IN_SECONDS ); } /** * @since 2.9.0 */ if ( ! defined( 'EMPTY_TRASH_DAYS' ) ) { define( 'EMPTY_TRASH_DAYS', 30 ); } if ( ! defined( 'WP_POST_REVISIONS' ) ) { define( 'WP_POST_REVISIONS', true ); } /** * @since 3.3.0 */ if ( ! defined( 'WP_CRON_LOCK_TIMEOUT' ) ) { define( 'WP_CRON_LOCK_TIMEOUT', MINUTE_IN_SECONDS ); } } /** * Defines templating-related WordPress constants. * * @since 3.0.0 */ function wp_templating_constants() { /** * Filesystem path to the current active template directory. * * @since 1.5.0 * @deprecated 6.4.0 Use get_template_directory() instead. * @see get_template_directory() */ define( 'TEMPLATEPATH', get_template_directory() ); /** * Filesystem path to the current active template stylesheet directory. * * @since 2.1.0 * @deprecated 6.4.0 Use get_stylesheet_directory() instead. * @see get_stylesheet_directory() */ define( 'STYLESHEETPATH', get_stylesheet_directory() ); /** * Slug of the default theme for this installation. * Used as the default theme when installing new sites. * It will be used as the fallback if the active theme doesn't exist. * * @since 3.0.0 * * @see WP_Theme::get_core_default_theme() */ if ( ! defined( 'WP_DEFAULT_THEME' ) ) { define( 'WP_DEFAULT_THEME', 'twentytwentyfive' ); } } /** * The plugin API is located in this file, which allows for creating actions * and filters and hooking functions, and methods. The functions or methods will * then be run when the action or filter is called. * * The API callback examples reference functions, but can be methods of classes. * To hook methods, you'll need to pass an array one of two ways. * * Any of the syntaxes explained in the PHP documentation for the * {@link https://www.php.net/manual/en/language.pseudo-types.php#language.types.callback 'callback'} * type are valid. * * Also see the {@link https://developer.wordpress.org/plugins/ Plugin API} for * more information and examples on how to use a lot of these functions. * * This file should have no external dependencies. * * @package WordPress * @subpackage Plugin * @since 1.5.0 */ // Initialize the filter globals. require __DIR__ . '/class-wp-hook.php'; /** @var WP_Hook[] $wp_filter */ global $wp_filter; /** @var int[] $wp_actions */ global $wp_actions; /** @var int[] $wp_filters */ global $wp_filters; /** @var string[] $wp_current_filter */ global $wp_current_filter; if ( $wp_filter ) { $wp_filter = WP_Hook::build_preinitialized_hooks( $wp_filter ); } else { $wp_filter = array(); } if ( ! isset( $wp_actions ) ) { $wp_actions = array(); } if ( ! isset( $wp_filters ) ) { $wp_filters = array(); } if ( ! isset( $wp_current_filter ) ) { $wp_current_filter = array(); } /** * Adds a callback function to a filter hook. * * WordPress offers filter hooks to allow plugins to modify * various types of internal data at runtime. * * A plugin can modify data by binding a callback to a filter hook. When the filter * is later applied, each bound callback is run in order of priority, and given * the opportunity to modify a value by returning a new value. * * The following example shows how a callback function is bound to a filter hook. * * Note that `$example` is passed to the callback, (maybe) modified, then returned: * * function example_callback( $example ) { * // Maybe modify $example in some way. * return $example; * } * add_filter( 'example_filter', 'example_callback' ); * * Bound callbacks can accept from none to the total number of arguments passed as parameters * in the corresponding apply_filters() call. * * In other words, if an apply_filters() call passes four total arguments, callbacks bound to * it can accept none (the same as 1) of the arguments or up to four. The important part is that * the `$accepted_args` value must reflect the number of arguments the bound callback *actually* * opted to accept. If no arguments were accepted by the callback that is considered to be the * same as accepting 1 argument. For example: * * // Filter call. * $value = apply_filters( 'hook', $value, $arg2, $arg3 ); * * // Accepting zero/one arguments. * function example_callback() { * ... * return 'some value'; * } * add_filter( 'hook', 'example_callback' ); // Where $priority is default 10, $accepted_args is default 1. * * // Accepting two arguments (three possible). * function example_callback( $value, $arg2 ) { * ... * return $maybe_modified_value; * } * add_filter( 'hook', 'example_callback', 10, 2 ); // Where $priority is 10, $accepted_args is 2. * * *Note:* The function will return true whether or not the callback is valid. * It is up to you to take care. This is done for optimization purposes, so * everything is as quick as possible. * * @since 0.71 * * @global WP_Hook[] $wp_filter A multidimensional array of all hooks and the callbacks hooked to them. * * @param string $hook_name The name of the filter to add the callback to. * @param callable $callback The callback to be run when the filter is applied. * @param int $priority Optional. Used to specify the order in which the functions * associated with a particular filter are executed. * Lower numbers correspond with earlier execution, * and functions with the same priority are executed * in the order in which they were added to the filter. Default 10. * @param int $accepted_args Optional. The number of arguments the function accepts. Default 1. * @return true Always returns true. */ function add_filter( $hook_name, $callback, $priority = 10, $accepted_args = 1 ) { global $wp_filter; if ( ! isset( $wp_filter[ $hook_name ] ) ) { $wp_filter[ $hook_name ] = new WP_Hook(); } $wp_filter[ $hook_name ]->add_filter( $hook_name, $callback, $priority, $accepted_args ); return true; } /** * Calls the callback functions that have been added to a filter hook. * * This function invokes all functions attached to filter hook `$hook_name`. * It is possible to create new filter hooks by simply calling this function, * specifying the name of the new hook using the `$hook_name` parameter. * * The function also allows for multiple additional arguments to be passed to hooks. * * Example usage: * * // The filter callback function. * function example_callback( $string, $arg1, $arg2 ) { * // (maybe) modify $string. * return $string; * } * add_filter( 'example_filter', 'example_callback', 10, 3 ); * * /* * * Apply the filters by calling the 'example_callback()' function * * that's hooked onto `example_filter` above. * * * * - 'example_filter' is the filter hook. * * - 'filter me' is the value being filtered. * * - $arg1 and $arg2 are the additional arguments passed to the callback. * $value = apply_filters( 'example_filter', 'filter me', $arg1, $arg2 ); * * @since 0.71 * @since 6.0.0 Formalized the existing and already documented `...$args` parameter * by adding it to the function signature. * * @global WP_Hook[] $wp_filter Stores all of the filters and actions. * @global int[] $wp_filters Stores the number of times each filter was triggered. * @global string[] $wp_current_filter Stores the list of current filters with the current one last. * * @param string $hook_name The name of the filter hook. * @param mixed $value The value to filter. * @param mixed ...$args Optional. Additional parameters to pass to the callback functions. * @return mixed The filtered value after all hooked functions are applied to it. */ function apply_filters( $hook_name, $value, ...$args ) { global $wp_filter, $wp_filters, $wp_current_filter; if ( ! isset( $wp_filters[ $hook_name ] ) ) { $wp_filters[ $hook_name ] = 1; } else { ++$wp_filters[ $hook_name ]; } // Do 'all' actions first. if ( isset( $wp_filter['all'] ) ) { $wp_current_filter[] = $hook_name; $all_args = func_get_args(); // phpcs:ignore PHPCompatibility.FunctionUse.ArgumentFunctionsReportCurrentValue.NeedsInspection _wp_call_all_hook( $all_args ); } if ( ! isset( $wp_filter[ $hook_name ] ) ) { if ( isset( $wp_filter['all'] ) ) { array_pop( $wp_current_filter ); } return $value; } if ( ! isset( $wp_filter['all'] ) ) { $wp_current_filter[] = $hook_name; } // Pass the value to WP_Hook. array_unshift( $args, $value ); $filtered = $wp_filter[ $hook_name ]->apply_filters( $value, $args ); array_pop( $wp_current_filter ); return $filtered; } /** * Calls the callback functions that have been added to a filter hook, specifying arguments in an array. * * @since 3.0.0 * * @see apply_filters() This function is identical, but the arguments passed to the * functions hooked to `$hook_name` are supplied using an array. * * @global WP_Hook[] $wp_filter Stores all of the filters and actions. * @global int[] $wp_filters Stores the number of times each filter was triggered. * @global string[] $wp_current_filter Stores the list of current filters with the current one last. * * @param string $hook_name The name of the filter hook. * @param array $args The arguments supplied to the functions hooked to `$hook_name`. * @return mixed The filtered value after all hooked functions are applied to it. */ function apply_filters_ref_array( $hook_name, $args ) { global $wp_filter, $wp_filters, $wp_current_filter; if ( ! isset( $wp_filters[ $hook_name ] ) ) { $wp_filters[ $hook_name ] = 1; } else { ++$wp_filters[ $hook_name ]; } // Do 'all' actions first. if ( isset( $wp_filter['all'] ) ) { $wp_current_filter[] = $hook_name; $all_args = func_get_args(); // phpcs:ignore PHPCompatibility.FunctionUse.ArgumentFunctionsReportCurrentValue.NeedsInspection _wp_call_all_hook( $all_args ); } if ( ! isset( $wp_filter[ $hook_name ] ) ) { if ( isset( $wp_filter['all'] ) ) { array_pop( $wp_current_filter ); } return $args[0]; } if ( ! isset( $wp_filter['all'] ) ) { $wp_current_filter[] = $hook_name; } $filtered = $wp_filter[ $hook_name ]->apply_filters( $args[0], $args ); array_pop( $wp_current_filter ); return $filtered; } /** * Checks if any filter has been registered for a hook. * * When using the `$callback` argument, this function may return a non-boolean value * that evaluates to false (e.g. 0), so use the `===` operator for testing the return value. * * @since 2.5.0 * * @global WP_Hook[] $wp_filter Stores all of the filters and actions. * * @param string $hook_name The name of the filter hook. * @param callable|string|array|false $callback Optional. The callback to check for. * This function can be called unconditionally to speculatively check * a callback that may or may not exist. Default false. * @return bool|int If `$callback` is omitted, returns boolean for whether the hook has * anything registered. When checking a specific function, the priority * of that hook is returned, or false if the function is not attached. */ function has_filter( $hook_name, $callback = false ) { global $wp_filter; if ( ! isset( $wp_filter[ $hook_name ] ) ) { return false; } return $wp_filter[ $hook_name ]->has_filter( $hook_name, $callback ); } /** * Removes a callback function from a filter hook. * * This can be used to remove default functions attached to a specific filter * hook and possibly replace them with a substitute. * * To remove a hook, the `$callback` and `$priority` arguments must match * when the hook was added. This goes for both filters and actions. No warning * will be given on removal failure. * * @since 1.2.0 * * @global WP_Hook[] $wp_filter Stores all of the filters and actions. * * @param string $hook_name The filter hook to which the function to be removed is hooked. * @param callable|string|array $callback The callback to be removed from running when the filter is applied. * This function can be called unconditionally to speculatively remove * a callback that may or may not exist. * @param int $priority Optional. The exact priority used when adding the original * filter callback. Default 10. * @return bool Whether the function existed before it was removed. */ function remove_filter( $hook_name, $callback, $priority = 10 ) { global $wp_filter; $r = false; if ( isset( $wp_filter[ $hook_name ] ) ) { $r = $wp_filter[ $hook_name ]->remove_filter( $hook_name, $callback, $priority ); if ( ! $wp_filter[ $hook_name ]->callbacks ) { unset( $wp_filter[ $hook_name ] ); } } return $r; } /** * Removes all of the callback functions from a filter hook. * * @since 2.7.0 * * @global WP_Hook[] $wp_filter Stores all of the filters and actions. * * @param string $hook_name The filter to remove callbacks from. * @param int|false $priority Optional. The priority number to remove them from. * Default false. * @return true Always returns true. */ function remove_all_filters( $hook_name, $priority = false ) { global $wp_filter; if ( isset( $wp_filter[ $hook_name ] ) ) { $wp_filter[ $hook_name ]->remove_all_filters( $priority ); if ( ! $wp_filter[ $hook_name ]->has_filters() ) { unset( $wp_filter[ $hook_name ] ); } } return true; } /** * Retrieves the name of the current filter hook. * * @since 2.5.0 * * @global string[] $wp_current_filter Stores the list of current filters with the current one last * * @return string Hook name of the current filter. */ function current_filter() { global $wp_current_filter; return end( $wp_current_filter ); } /** * Returns whether or not a filter hook is currently being processed. * * The function current_filter() only returns the most recent filter being executed. * did_filter() returns the number of times a filter has been applied during * the current request. * * This function allows detection for any filter currently being executed * (regardless of whether it's the most recent filter to fire, in the case of * hooks called from hook callbacks) to be verified. * * @since 3.9.0 * * @see current_filter() * @see did_filter() * @global string[] $wp_current_filter Current filter. * * @param string|null $hook_name Optional. Filter hook to check. Defaults to null, * which checks if any filter is currently being run. * @return bool Whether the filter is currently in the stack. */ function doing_filter( $hook_name = null ) { global $wp_current_filter; if ( null === $hook_name ) { return ! empty( $wp_current_filter ); } return in_array( $hook_name, $wp_current_filter, true ); } /** * Retrieves the number of times a filter has been applied during the current request. * * @since 6.1.0 * * @global int[] $wp_filters Stores the number of times each filter was triggered. * * @param string $hook_name The name of the filter hook. * @return int The number of times the filter hook has been applied. */ function did_filter( $hook_name ) { global $wp_filters; if ( ! isset( $wp_filters[ $hook_name ] ) ) { return 0; } return $wp_filters[ $hook_name ]; } /** * Adds a callback function to an action hook. * * Actions are the hooks that the WordPress core launches at specific points * during execution, or when specific events occur. Plugins can specify that * one or more of its PHP functions are executed at these points, using the * Action API. * * @since 1.2.0 * * @param string $hook_name The name of the action to add the callback to. * @param callable $callback The callback to be run when the action is called. * @param int $priority Optional. Used to specify the order in which the functions * associated with a particular action are executed. * Lower numbers correspond with earlier execution, * and functions with the same priority are executed * in the order in which they were added to the action. Default 10. * @param int $accepted_args Optional. The number of arguments the function accepts. Default 1. * @return true Always returns true. */ function add_action( $hook_name, $callback, $priority = 10, $accepted_args = 1 ) { return add_filter( $hook_name, $callback, $priority, $accepted_args ); } /** * Calls the callback functions that have been added to an action hook. * * This function invokes all functions attached to action hook `$hook_name`. * It is possible to create new action hooks by simply calling this function, * specifying the name of the new hook using the `$hook_name` parameter. * * You can pass extra arguments to the hooks, much like you can with `apply_filters()`. * * Example usage: * * // The action callback function. * function example_callback( $arg1, $arg2 ) { * // (maybe) do something with the args. * } * add_action( 'example_action', 'example_callback', 10, 2 ); * * /* * * Trigger the actions by calling the 'example_callback()' function * * that's hooked onto `example_action` above. * * * * - 'example_action' is the action hook. * * - $arg1 and $arg2 are the additional arguments passed to the callback. * do_action( 'example_action', $arg1, $arg2 ); * * @since 1.2.0 * @since 5.3.0 Formalized the existing and already documented `...$arg` parameter * by adding it to the function signature. * * @global WP_Hook[] $wp_filter Stores all of the filters and actions. * @global int[] $wp_actions Stores the number of times each action was triggered. * @global string[] $wp_current_filter Stores the list of current filters with the current one last. * * @param string $hook_name The name of the action to be executed. * @param mixed ...$arg Optional. Additional arguments which are passed on to the * functions hooked to the action. Default empty. */ function do_action( $hook_name, ...$arg ) { global $wp_filter, $wp_actions, $wp_current_filter; if ( ! isset( $wp_actions[ $hook_name ] ) ) { $wp_actions[ $hook_name ] = 1; } else { ++$wp_actions[ $hook_name ]; } // Do 'all' actions first. if ( isset( $wp_filter['all'] ) ) { $wp_current_filter[] = $hook_name; $all_args = func_get_args(); // phpcs:ignore PHPCompatibility.FunctionUse.ArgumentFunctionsReportCurrentValue.NeedsInspection _wp_call_all_hook( $all_args ); } if ( ! isset( $wp_filter[ $hook_name ] ) ) { if ( isset( $wp_filter['all'] ) ) { array_pop( $wp_current_filter ); } return; } if ( ! isset( $wp_filter['all'] ) ) { $wp_current_filter[] = $hook_name; } if ( empty( $arg ) ) { $arg[] = ''; } elseif ( is_array( $arg[0] ) && 1 === count( $arg[0] ) && isset( $arg[0][0] ) && is_object( $arg[0][0] ) ) { // Backward compatibility for PHP4-style passing of `array( &$this )` as action `$arg`. $arg[0] = $arg[0][0]; } $wp_filter[ $hook_name ]->do_action( $arg ); array_pop( $wp_current_filter ); } /** * Calls the callback functions that have been added to an action hook, specifying arguments in an array. * * @since 2.1.0 * * @see do_action() This function is identical, but the arguments passed to the * functions hooked to `$hook_name` are supplied using an array. * * @global WP_Hook[] $wp_filter Stores all of the filters and actions. * @global int[] $wp_actions Stores the number of times each action was triggered. * @global string[] $wp_current_filter Stores the list of current filters with the current one last. * * @param string $hook_name The name of the action to be executed. * @param array $args The arguments supplied to the functions hooked to `$hook_name`. */ function do_action_ref_array( $hook_name, $args ) { global $wp_filter, $wp_actions, $wp_current_filter; if ( ! isset( $wp_actions[ $hook_name ] ) ) { $wp_actions[ $hook_name ] = 1; } else { ++$wp_actions[ $hook_name ]; } // Do 'all' actions first. if ( isset( $wp_filter['all'] ) ) { $wp_current_filter[] = $hook_name; $all_args = func_get_args(); // phpcs:ignore PHPCompatibility.FunctionUse.ArgumentFunctionsReportCurrentValue.NeedsInspection _wp_call_all_hook( $all_args ); } if ( ! isset( $wp_filter[ $hook_name ] ) ) { if ( isset( $wp_filter['all'] ) ) { array_pop( $wp_current_filter ); } return; } if ( ! isset( $wp_filter['all'] ) ) { $wp_current_filter[] = $hook_name; } $wp_filter[ $hook_name ]->do_action( $args ); array_pop( $wp_current_filter ); } /** * Checks if any action has been registered for a hook. * * When using the `$callback` argument, this function may return a non-boolean value * that evaluates to false (e.g. 0), so use the `===` operator for testing the return value. * * @since 2.5.0 * * @see has_filter() This function is an alias of has_filter(). * * @param string $hook_name The name of the action hook. * @param callable|string|array|false $callback Optional. The callback to check for. * This function can be called unconditionally to speculatively check * a callback that may or may not exist. Default false. * @return bool|int If `$callback` is omitted, returns boolean for whether the hook has * anything registered. When checking a specific function, the priority * of that hook is returned, or false if the function is not attached. */ function has_action( $hook_name, $callback = false ) { return has_filter( $hook_name, $callback ); } /** * Removes a callback function from an action hook. * * This can be used to remove default functions attached to a specific action * hook and possibly replace them with a substitute. * * To remove a hook, the `$callback` and `$priority` arguments must match * when the hook was added. This goes for both filters and actions. No warning * will be given on removal failure. * * @since 1.2.0 * * @param string $hook_name The action hook to which the function to be removed is hooked. * @param callable|string|array $callback The name of the function which should be removed. * This function can be called unconditionally to speculatively remove * a callback that may or may not exist. * @param int $priority Optional. The exact priority used when adding the original * action callback. Default 10. * @return bool Whether the function is removed. */ function remove_action( $hook_name, $callback, $priority = 10 ) { return remove_filter( $hook_name, $callback, $priority ); } /** * Removes all of the callback functions from an action hook. * * @since 2.7.0 * * @param string $hook_name The action to remove callbacks from. * @param int|false $priority Optional. The priority number to remove them from. * Default false. * @return true Always returns true. */ function remove_all_actions( $hook_name, $priority = false ) { return remove_all_filters( $hook_name, $priority ); } /** * Retrieves the name of the current action hook. * * @since 3.9.0 * * @return string Hook name of the current action. */ function current_action() { return current_filter(); } /** * Returns whether or not an action hook is currently being processed. * * The function current_action() only returns the most recent action being executed. * did_action() returns the number of times an action has been fired during * the current request. * * This function allows detection for any action currently being executed * (regardless of whether it's the most recent action to fire, in the case of * hooks called from hook callbacks) to be verified. * * @since 3.9.0 * * @see current_action() * @see did_action() * * @param string|null $hook_name Optional. Action hook to check. Defaults to null, * which checks if any action is currently being run. * @return bool Whether the action is currently in the stack. */ function doing_action( $hook_name = null ) { return doing_filter( $hook_name ); } /** * Retrieves the number of times an action has been fired during the current request. * * @since 2.1.0 * * @global int[] $wp_actions Stores the number of times each action was triggered. * * @param string $hook_name The name of the action hook. * @return int The number of times the action hook has been fired. */ function did_action( $hook_name ) { global $wp_actions; if ( ! isset( $wp_actions[ $hook_name ] ) ) { return 0; } return $wp_actions[ $hook_name ]; } /** * Fires functions attached to a deprecated filter hook. * * When a filter hook is deprecated, the apply_filters() call is replaced with * apply_filters_deprecated(), which triggers a deprecation notice and then fires * the original filter hook. * * Note: the value and extra arguments passed to the original apply_filters() call * must be passed here to `$args` as an array. For example: * * // Old filter. * return apply_filters( 'wpdocs_filter', $value, $extra_arg ); * * // Deprecated. * return apply_filters_deprecated( 'wpdocs_filter', array( $value, $extra_arg ), '4.9.0', 'wpdocs_new_filter' ); * * @since 4.6.0 * * @see _deprecated_hook() * * @param string $hook_name The name of the filter hook. * @param array $args Array of additional function arguments to be passed to apply_filters(). * @param string $version The version of WordPress that deprecated the hook. * @param string $replacement Optional. The hook that should have been used. Default empty. * @param string $message Optional. A message regarding the change. Default empty. * @return mixed The filtered value after all hooked functions are applied to it. */ function apply_filters_deprecated( $hook_name, $args, $version, $replacement = '', $message = '' ) { if ( ! has_filter( $hook_name ) ) { return $args[0]; } _deprecated_hook( $hook_name, $version, $replacement, $message ); return apply_filters_ref_array( $hook_name, $args ); } /** * Fires functions attached to a deprecated action hook. * * When an action hook is deprecated, the do_action() call is replaced with * do_action_deprecated(), which triggers a deprecation notice and then fires * the original hook. * * @since 4.6.0 * * @see _deprecated_hook() * * @param string $hook_name The name of the action hook. * @param array $args Array of additional function arguments to be passed to do_action(). * @param string $version The version of WordPress that deprecated the hook. * @param string $replacement Optional. The hook that should have been used. Default empty. * @param string $message Optional. A message regarding the change. Default empty. */ function do_action_deprecated( $hook_name, $args, $version, $replacement = '', $message = '' ) { if ( ! has_action( $hook_name ) ) { return; } _deprecated_hook( $hook_name, $version, $replacement, $message ); do_action_ref_array( $hook_name, $args ); } // // Functions for handling plugins. // /** * Gets the basename of a plugin. * * This method extracts the name of a plugin from its filename. * * @since 1.5.0 * * @global array $wp_plugin_paths * * @param string $file The filename of plugin. * @return string The name of a plugin. */ function plugin_basename( $file ) { global $wp_plugin_paths; // $wp_plugin_paths contains normalized paths. $file = wp_normalize_path( $file ); arsort( $wp_plugin_paths ); foreach ( $wp_plugin_paths as $dir => $realdir ) { if ( str_starts_with( $file, $realdir ) ) { $file = $dir . substr( $file, strlen( $realdir ) ); } } $plugin_dir = wp_normalize_path( WP_PLUGIN_DIR ); $mu_plugin_dir = wp_normalize_path( WPMU_PLUGIN_DIR ); // Get relative path from plugins directory. $file = preg_replace( '#^' . preg_quote( $plugin_dir, '#' ) . '/|^' . preg_quote( $mu_plugin_dir, '#' ) . '/#', '', $file ); $file = trim( $file, '/' ); return $file; } /** * Register a plugin's real path. * * This is used in plugin_basename() to resolve symlinked paths. * * @since 3.9.0 * * @see wp_normalize_path() * * @global array $wp_plugin_paths * * @param string $file Known path to the file. * @return bool Whether the path was able to be registered. */ function wp_register_plugin_realpath( $file ) { global $wp_plugin_paths; // Normalize, but store as static to avoid recalculation of a constant value. static $wp_plugin_path = null, $wpmu_plugin_path = null; if ( ! isset( $wp_plugin_path ) ) { $wp_plugin_path = wp_normalize_path( WP_PLUGIN_DIR ); $wpmu_plugin_path = wp_normalize_path( WPMU_PLUGIN_DIR ); } $plugin_path = wp_normalize_path( dirname( $file ) ); $plugin_realpath = wp_normalize_path( dirname( realpath( $file ) ) ); if ( $plugin_path === $wp_plugin_path || $plugin_path === $wpmu_plugin_path ) { return false; } if ( $plugin_path !== $plugin_realpath ) { $wp_plugin_paths[ $plugin_path ] = $plugin_realpath; } return true; } /** * Get the filesystem directory path (with trailing slash) for the plugin __FILE__ passed in. * * @since 2.8.0 * * @param string $file The filename of the plugin (__FILE__). * @return string the filesystem path of the directory that contains the plugin. */ function plugin_dir_path( $file ) { return trailingslashit( dirname( $file ) ); } /** * Get the URL directory path (with trailing slash) for the plugin __FILE__ passed in. * * @since 2.8.0 * * @param string $file The filename of the plugin (__FILE__). * @return string the URL path of the directory that contains the plugin. */ function plugin_dir_url( $file ) { return trailingslashit( plugins_url( '', $file ) ); } /** * Set the activation hook for a plugin. * * When a plugin is activated, the action 'activate_PLUGINNAME' hook is * called. In the name of this hook, PLUGINNAME is replaced with the name * of the plugin, including the optional subdirectory. For example, when the * plugin is located in wp-content/plugins/sampleplugin/sample.php, then * the name of this hook will become 'activate_sampleplugin/sample.php'. * * When the plugin consists of only one file and is (as by default) located at * wp-content/plugins/sample.php the name of this hook will be * 'activate_sample.php'. * * @since 2.0.0 * * @param string $file The filename of the plugin including the path. * @param callable $callback The function hooked to the 'activate_PLUGIN' action. */ function register_activation_hook( $file, $callback ) { $file = plugin_basename( $file ); add_action( 'activate_' . $file, $callback ); } /** * Sets the deactivation hook for a plugin. * * When a plugin is deactivated, the action 'deactivate_PLUGINNAME' hook is * called. In the name of this hook, PLUGINNAME is replaced with the name * of the plugin, including the optional subdirectory. For example, when the * plugin is located in wp-content/plugins/sampleplugin/sample.php, then * the name of this hook will become 'deactivate_sampleplugin/sample.php'. * * When the plugin consists of only one file and is (as by default) located at * wp-content/plugins/sample.php the name of this hook will be * 'deactivate_sample.php'. * * @since 2.0.0 * * @param string $file The filename of the plugin including the path. * @param callable $callback The function hooked to the 'deactivate_PLUGIN' action. */ function register_deactivation_hook( $file, $callback ) { $file = plugin_basename( $file ); add_action( 'deactivate_' . $file, $callback ); } /** * Sets the uninstallation hook for a plugin. * * Registers the uninstall hook that will be called when the user clicks on the * uninstall link that calls for the plugin to uninstall itself. The link won't * be active unless the plugin hooks into the action. * * The plugin should not run arbitrary code outside of functions, when * registering the uninstall hook. In order to run using the hook, the plugin * will have to be included, which means that any code laying outside of a * function will be run during the uninstallation process. The plugin should not * hinder the uninstallation process. * * If the plugin can not be written without running code within the plugin, then * the plugin should create a file named 'uninstall.php' in the base plugin * folder. This file will be called, if it exists, during the uninstallation process * bypassing the uninstall hook. The plugin, when using the 'uninstall.php' * should always check for the 'WP_UNINSTALL_PLUGIN' constant, before * executing. * * @since 2.7.0 * * @param string $file Plugin file. * @param callable $callback The callback to run when the hook is called. Must be * a static method or function. */ function register_uninstall_hook( $file, $callback ) { if ( is_array( $callback ) && is_object( $callback[0] ) ) { _doing_it_wrong( __FUNCTION__, __( 'Only a static class method or function can be used in an uninstall hook.' ), '3.1.0' ); return; } /* * The option should not be autoloaded, because it is not needed in most * cases. Emphasis should be put on using the 'uninstall.php' way of * uninstalling the plugin. */ $uninstallable_plugins = (array) get_option( 'uninstall_plugins' ); $plugin_basename = plugin_basename( $file ); if ( ! isset( $uninstallable_plugins[ $plugin_basename ] ) || $uninstallable_plugins[ $plugin_basename ] !== $callback ) { $uninstallable_plugins[ $plugin_basename ] = $callback; update_option( 'uninstall_plugins', $uninstallable_plugins ); } } /** * Calls the 'all' hook, which will process the functions hooked into it. * * The 'all' hook passes all of the arguments or parameters that were used for * the hook, which this function was called for. * * This function is used internally for apply_filters(), do_action(), and * do_action_ref_array() and is not meant to be used from outside those * functions. This function does not check for the existence of the all hook, so * it will fail unless the all hook exists prior to this function call. * * @since 2.5.0 * @access private * * @global WP_Hook[] $wp_filter Stores all of the filters and actions. * * @param array $args The collected parameters from the hook that was called. */ function _wp_call_all_hook( $args ) { global $wp_filter; $wp_filter['all']->do_all_hook( $args ); } /** * Builds a unique string ID for a hook callback function. * * Functions and static method callbacks are just returned as strings and * shouldn't have any speed penalty. * * @link https://core.trac.wordpress.org/ticket/3875 * * @since 2.2.3 * @since 5.3.0 Removed workarounds for spl_object_hash(). * `$hook_name` and `$priority` are no longer used, * and the function always returns a string. * * @access private * * @param string $hook_name Unused. The name of the filter to build ID for. * @param callable|string|array $callback The callback to generate ID for. The callback may * or may not exist. * @param int $priority Unused. The order in which the functions * associated with a particular action are executed. * @return string Unique function ID for usage as array key. */ function _wp_filter_build_unique_id( $hook_name, $callback, $priority ) { if ( is_string( $callback ) ) { return $callback; } if ( is_object( $callback ) ) { // Closures are currently implemented as objects. $callback = array( $callback, '' ); } else { $callback = (array) $callback; } if ( is_object( $callback[0] ) ) { // Object class calling. return spl_object_hash( $callback[0] ) . $callback[1]; } elseif ( is_string( $callback[0] ) ) { // Static calling. return $callback[0] . '::' . $callback[1]; } }