<?php
session_start();
//假設(shè)用戶登陸成功獲得了以下用戶數(shù)據(jù)
$userinfo?=?array(
????'uid'=>?10000,
????'name'=>'spark',
????'email'=>'spark@imooc.com',
????'sex'=>'man',
????'age'=>'18'
);
header("content-tpye:text/html;charset=utf-8");
/*將用戶信息保存到session中*/
$_SESSION['uid']=$userinfo['uid'];
$_SESSION['name']=$userinfo['name'];
$_SESSION['userinfo']=$userinfo;
//將用戶數(shù)據(jù)保存懂啊cookie中的一個簡單方法
$secureKey='imooc';//加密密鑰
$str=serialize($userinfo);//將用戶信息序列化
//用戶信息加密前
$str=base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256,md5($secureKey),$str,MCRYPT_MODE_ECB));
//用戶信息加密后
//將加密后的用戶數(shù)據(jù)存儲到cookie中
setcookie('userinfo',$str);
//當(dāng)需要使用時進行解密
$str=mcrypt_decrypt(MCRYPT_RIJNDAEL_256,md5($secureKey),base64_decode($str),MCRYPT_MODE_ECB);
$uinfo=unserialize($str);
echo?"解密后的用戶信息：<br>";
print_r($uinfo);

結(jié)果報錯，顯示

PHP Fatal error:? Uncaught Error: Call to undefined function mcrypt_encrypt() in D:\Demo\Session control08.php:20

Stack trace:

#0 {main}

? thrown in D:\Demo\Session control08.php on line 20

Fatal error: Uncaught Error: Call to undefined function mcrypt_encrypt() in D:\Demo\Session control08.php:20

Stack trace:

#0 {main}

? thrown in D:\Demo\Session control08.php on line 20

進程已結(jié)束,退出代碼255