PHP知识分享之session && cookie

<?php
    /*
     * @Content : session && cookie
     * @author  : Mr.xml 
     * @time    : 2015-3-17 09:53:49
     */
    session_start();    //开启session
    header("Content-type:text/html;charset=utf-8");    //设置字符编码
    $_SESSION['arr'] = array(
        'name' =>'xx',
        'age'=>20,
        'sex'=>'is_nan',
    );
    session_destroy();    //销毁session 
    if(isset($_SESSION)){
        print_r($_SESSION);
    }else{
        echo "session以销毁！";
    }
///////////////////////////////////////////////////////////////////

    // php设置cookie ，php中cookie如何以数组的方式进行存储
    $arr  = array(
        'name'=>'xxxx22',
        'sex'=>'boys',
        'age'=>21,
    );
    //数组转换字符串存储
    $cookie  = serialize($arr);
    //设置cookie
    setcookie('cookies',$cookie,time()+60*60);  
    print_r($cookies);

    setcookie('cookies','',time()-3600)    //销毁cookie
    if(isset($cookies)){
        print_r($cookies);
    }else{
        echo "cookie已销毁！";
    }