代码一
<?php session_start(); $allow_sep = "60"; if (isset($_SESSION["post_sep"])){ if (time() - $_SESSION["post_sep"] < $allow_sep) {exit("孩子你能消停一下么?刷新请60秒后继续!");} else{$_SESSION["post_sep"] = time();} }else{$_SESSION["post_sep"] = time();} ?>
代码二
<?php //代理IP直接退出 empty($_SERVER['HTTP_VIA']) or exit('Access Denied'); //防止快速刷新,在设置的时间内到达设置次数就跳转的设定的页面 session_start(); $seconds = '3'; //时间段[秒] $refresh = '3'; //刷新次数 //设置监控变量 $cur_time = time(); if(isset($_SESSION['last_time'])){ $_SESSION['refresh_times'] += 1; }else{ $_SESSION['refresh_times'] = 1; $_SESSION['last_time'] = $cur_time; } //处理监控结果 if($cur_time - $_SESSION['last_time'] < $seconds){ if($_SESSION['refresh_times'] >= $refresh){ //跳转至攻击者服务器地址 header(sprintf('Location:%s', 'http://127.0.0.1')); exit('Access Denied'); } }else{ $_SESSION['refresh_times'] = 0; $_SESSION['last_time'] = $cur_time; } ?>可以将以上代码放在header.php文件中
代码三 js防止F5频繁刷新代码
<script> document.onkeydown = function(e){ e = window.event || e; var keycode = e.keyCode || e.which; if( keycode = 116){ if(window.event){// ie try{e.keyCode = 0;}catch(e){} e.returnValue = false; }else{e.preventDefault();} }} </script>
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