How to expire page in PHP when user logout

Question

当最终用户点击浏览器的LogOut或Back按钮时 ，我想要使我的上一页过期。

Answer 1

If you include this at the top of all of your pages, it will require the client to always reload the content, making the back-button requesting a new copy of the page.

<?php
header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past
?>

http://php.net/manual/en/function.header.php

Answer 2

使用session_destroy();销毁会话密钥session_destroy();

Answer 3

浏览器后退按钮可能会出现一些问题，因为单击时，某些浏览器根本不会从服务器重新加载页面，而是从缓存中显示页面的先前状态。