cookie
setcookie(名稱,值,過期時間,有效路徑,有效域,安全);
setcookie('username','zhangshuo',time()+3600,'/');
退出cookie:
setcookie('username',null,-3600,'/');
<?php
setcookie('username','zhangshuo',time()+3600,'/');
<?php
header("content-type:text/html;charset=utf-8");
setcookie('username',null,-3600,'/');
setcookie('userpwd',null,-3600,'/');
echo '<script type="text/javascript">alert("退出成功!");window.location="login.php";</script>';
session
開啓會話控制
session_start();
$_SESSION['username'] = 'wangyufeng';
退出session:
//1,開啓會話控制
session_start();
$_SESSION['user'] = null;
//2,判斷cookie['PHPSESSID']是否存在,如果存在就銷燬
if(!empty($_COOKIE[session_name()])){
setcookie(session_name(),null,-3600,'/');
}
//3,調用系統銷燬session的函數
session_destroy();