app_controller.php

<?php
/**
 * Application level Controller
 *
 * This file is application-wide controller file. You can put all
 * application-wide controller-related methods here.
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 * Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://cakephp.org CakePHP(tm) Project
 * @package       cake
 * @subpackage    cake.cake.libs.controller
 * @since         CakePHP(tm) v 0.2.9
 * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
 */

/**
 * This is a placeholder class.
 * Create the same file in app/app_controller.php
 *
 * Controllers will inherit these methods.
 * We mainly only use it to set some variables (merged by cake), mostly to set
 * our custom helper for the menu.
 *
 * @package       cake
 * @subpackage    cake.cake.libs.controller
 * @link http://book.cakephp.org/view/957/The-App-Controller
 */
class AppController extends Controller {

    var $components = array('Session');
    var $helpers = array ('Html','Form', 'Number', 'Js', 'Time', 'Menu', 'Session');

}