<?php // +---------------------------------------------------------------------- // | ThinkPHP [ WE CAN DO IT JUST THINK IT ] // +---------------------------------------------------------------------- // | Copyright (c) 2009 http://thinkphp.cn All rights reserved. // +---------------------------------------------------------------------- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) // +---------------------------------------------------------------------- // | Author: liu21st <liu21st@gmail.com> // +---------------------------------------------------------------------- namespace Org\Util; /** * Stack实现类 * @category ORG * @package ORG * @subpackage Util * @author liu21st <liu21st@gmail.com> */ class Stack extends ArrayList { /** * 架构函数 * @access public * @param array $values 初始化数组元素 */ public function __construct($values = array()) { parent::__construct($values); } /** * 将堆栈的内部指针指向第一个单元 * @access public * @return mixed */ public function peek() { return reset($this->toArray()); } /** * 元素进栈 * @access public * @param mixed $value * @return mixed */ public function push($value) { $this->add($value); return $value; } }