cakephp/app/View/Helper/AppHelper.php

<?php
/**
 * Application level View Helper
 *
 * This file is application-wide helper file. You can put all
 * application-wide helper-related methods here.
 *
 * PHP 5
 *
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 * Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://cakephp.org CakePHP(tm) Project
 * @package       Cake.View.Helper
 * @since         CakePHP(tm) v 0.2.9
 * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
 */
App::uses('Helper', 'View');

/**
 * This is a placeholder class.
 * Create the same file in app/View/Helper/AppHelper.php
 *
 * Add your application-wide methods in the class below, your helpers
 * will inherit them.
 *
 * @package       Cake.View.Helper
 */
class AppHelper extends Helper {
}