PHP Memcached 替换 系统$_SESSION

<?php

/**Memcache替换SESSION类 
 * +---------------------------------
 * @Created by PHPSTORM.
 * @User: schh Singee
 * Class MemcacheSession
 **+---------------------------------
 */
class MemcacheSession extends MemcachePool{
    //memcached服务器连接地址
     private $_MEMCACHEAUTH = array(
         ‘host‘ => ‘localhost‘,
         ‘port‘ => 11211,
    );

    /*
    获取一些初始化设置值
    */
    private $_SESSION_NAME = ‘MEM‘; //sessionid的名称 默认PHPSESSID
    private $_SESSION_TIME = 0; //sessionid这个cookie的最大保存时间
    private $_SESSION_EXPIRE = 86400; //session键值对在memcached里面的过期时间
    private $_SESSION_MEMKEY = ""; //sessionid值
    /*
    自定义的_session_start()方法，替换PHP的原生session_start()方法
    逻辑应该是比较清楚的
    */
    function _session_start()
    {
        //开启Memcache服务
        parent::connect($this->_MEMCACHEAUTH[‘host‘],$this->_MEMCACHEAUTH[‘port‘]);
        //获取COOKIE值（KEY值）不存在则设置  存在则根据KEY值获取该内存下的内容
        if ( empty($_COOKIE[$this->_SESSION_NAME]) )
        {
            $_SESSION_MEMKEY = md5( uniqid() ); //唯一的KEY
            setcookie($this->_SESSION_NAME, $_SESSION_MEMKEY , $this->_SESSION_TIME, "/",‘.cwddd.com‘);
            $_SESSION = array();
        }
        else
        {
            //获取COOKIE
            $_SESSION_MEMKEY = $_COOKIE[$this->_SESSION_NAME];

            //获取该KEY值下的值
            $_SESSION = parent::get($_SESSION_MEMKEY);
            if ( $_SESSION === FALSE )
            {
                $_SESSION = array();
            }
        }
        $this->_SESSION_MEMKEY = $_SESSION_MEMKEY;
        //注册一个handler，这个函数会在页面执行完的时候执行
        register_shutdown_function(array($this, "_session_save_handler"));
    }
    /*
    页面最后执行的方法，用于保存session值，以及关闭memcached连接
    */
    function _session_save_handler()
    {
        //执行完毕把当前SESSION值存入内存
        parent::set($this->_SESSION_MEMKEY,$_SESSION,0,$this->_SESSION_EXPIRE);
        parent::close();
    }

    //清空当前内存
    function _destroy(){
        parent::delete($_COOKIE[$this->_SESSION_NAME]);
    }
}

$mem = new MemcacheSession();

//自动开启MEM
$mem->_session_start();
?> 


因本人使用的是ThinkPHP框架测试，所以只要在入口文件index.php引入

<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

// 应用入口文件

// 检测PHP环境
if(version_compare(PHP_VERSION,‘5.3.0‘,‘<‘))  die(‘require PHP > 5.3.0 !‘);

// 开启调试模式 建议开发阶段开启 部署阶段注释或者设为false
define(‘APP_DEBUG‘,True);

// 定义应用目录
define(‘APP_PATH‘,‘./Application/‘);

define(‘BIND_MODULE‘,‘Home‘);

//入口Memcache替换SESSION
require ‘./Memcache/MemcacheSession.class.php‘;

// 引入ThinkPHP入口文件
require ‘./ThinkPHP/ThinkPHP.php‘;

// 亲^_^ 后面不需要任何代码了 就是如此简单

　　接下来创建一个测试控制器：

<?php
/**++++++++++++++++++++++++++++++++++++++
 * @Created by PhpStorm.
 * @User: schh Singee
 * @Date: 2015/11/4
 * @Time: 18:04
 **++++++++++++++++++++++++++++++++++++++
 */

namespace Home\Controller;
use Think\Controller;
class TestController extends Controller{
    function Iset(){
        set_time_limit(0);
        for($i=0;$i<50000000;$i++){
            $_SESSION[‘a‘.$i] = array(‘status‘=>array(1=>2),‘tudde‘=>array(‘1-2‘));
　　　　}       
    }

    function Iget(){
        print_r(session());
    }


}