php阻止网页被用户频繁刷新
一般情况下,用户浏览网页的速度都是几秒十几秒甚至更长时间刷新一页,但有时候又会遇到网页被恶意快速刷新,从而导致正常用户浏览速度缓慢,如何来解决这个问题呢?可以使用如下代码来实现每ip页面访问数量限制:
<?php $min_seconds_between_refreshes = 3;#设置刷新的时间 session_start(); if(array_key_exists('last_access', $_SESSION) && time()-$min_seconds_between_refreshes <= $_SESSION['last_access']) { // The user has been here at least $min_seconds_between_refreshes seconds ago - block them exit('You are refreshing too quickly, please wait a few seconds and try again.'); } // Record now as their last access time $_SESSION['last_access'] = time(); ?> 以上代码在真实的用户环境下,是可以实现的