* * @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 $function The function hooked to the 'activate_PLUGIN' action. */ function register_activation_hook( $file, $function ) { $file = plugin_basename( $file ); add_action( 'activate_' . $file, $function ); } /** * Set 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 $function The function hooked to the 'deactivate_PLUGIN' action. */ function register_deactivation_hook( $file, $function ) { $file = plugin_basename( $file ); add_action( 'deactivate_' . $file, $function ); } /** * Set 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' ); $uninstallable_plugins[ plugin_basename( $file ) ] = $callback; update_option( 'uninstall_plugins', $uninstallable_plugins ); } /** * Call 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 array $wp_filter Stores all of the filters * * @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 ); } /** * Build Unique ID for storage and retrieval. * * The old way to serialize the callback caused issues and this function is the * solution. It works by checking for objects and creating a new property in * the class to keep track of the object and new objects of the same class that * need to be added. * * It also allows for the removal of actions and filters for objects after they * change class properties. It is possible to include the property $wp_filter_id * in your class and set it to "null" or a number to bypass the workaround. * However this will prevent you from adding new classes and any new classes * will overwrite the previous hook by the same class. * * 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 * @access private * * @global array $wp_filter Storage for all of the filters and actions. * @staticvar int $filter_id_count * * @param string $tag Used in counting how many hooks were applied * @param callable $function Used for creating unique id * @param int|bool $priority Used in counting how many hooks were applied. If === false * and $function is an object reference, we return the unique * id only if it already has one, false otherwise. * @return string|false Unique ID for usage as array key or false if $priority === false * and $function is an object reference, and it does not already have * a unique id. */ function _wp_filter_build_unique_id( $tag, $function, $priority ) { global $wp_filter; static $filter_id_count = 0; if ( is_string( $function ) ) { return $function; } if ( is_object( $function ) ) { // Closures are currently implemented as objects $function = array( $function, '' ); } else { $function = (array) $function; } if ( is_object( $function[0] ) ) { // Object Class Calling if ( function_exists( 'spl_object_hash' ) ) { return spl_object_hash( $function[0] ) . $function[1]; } else { $obj_idx = get_class( $function[0] ) . $function[1]; if ( ! isset( $function[0]->wp_filter_id ) ) { if ( false === $priority ) { return false; } $obj_idx .= isset( $wp_filter[ $tag ][ $priority ] ) ? count( (array) $wp_filter[ $tag ][ $priority ] ) : $filter_id_count; $function[0]->wp_filter_id = $filter_id_count; ++$filter_id_count; } else { $obj_idx .= $function[0]->wp_filter_id; } return $obj_idx; } } elseif ( is_string( $function[0] ) ) { // Static Calling return $function[0] . '::' . $function[1]; } }