+/**
+ * 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 uninstall process. The plugin should not
+ * hinder the uninstall 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 uninstall 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
+ *
+ * @param string $file
+ * @param callback $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' );
+ 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);
+}
+
+/**
+ * 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.
+ *
+ * @package WordPress
+ * @subpackage Plugin
+ * @since 2.5
+ * @access private
+ *
+ * @uses $wp_filter Used to process all of the functions in the 'all' hook
+ *
+ * @param array $args The collected parameters from the hook that was called.
+ * @param string $hook Optional. The hook name that was used to call the 'all' hook.
+ */
+function _wp_call_all_hook($args) {
+ global $wp_filter;
+
+ reset( $wp_filter['all'] );
+ do {
+ foreach( (array) current($wp_filter['all']) as $the_ )
+ if ( !is_null($the_['function']) )
+ call_user_func_array($the_['function'], $args);
+
+ } while ( next($wp_filter['all']) !== false );
+}
+
+/**
+ * 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 an 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.
+ *
+ * @package WordPress
+ * @subpackage Plugin
+ * @access private
+ * @since 2.2.3
+ * @link http://trac.wordpress.org/ticket/3875
+ *
+ * @global array $wp_filter Storage for all of the filters and actions
+ * @param string $tag Used in counting how many hooks were applied
+ * @param callback $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|bool Unique ID for usage as array key or false if $priority === false and $function is an object reference, and it does not already have a uniqe id.
+ */
+function _wp_filter_build_unique_id($tag, $function, $priority) {
scripts.mit.edu / autoinstalls / wordpress.git / blobdiff