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PHP采用301跳转方式防CC拦截降低CC攻击的效果<?phpempty($_SERVER['HTTP_VIA'])orexit('AccessDenied');$seconds=10;//时间段[秒]$refresh=5;//刷新次数//设置监控变量$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){//跳转验证$url='http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];$msg=mb_convert_encoding("<title>安全检查</title><h3>检测到CC攻击，正在进行浏览器安全检查！</h3>","UTF-8","GBK");exit($msg."<metahttp-equiv='refresh'content='5;url={$url}'>");//5是定时跳转的时间，后期可以根据时间段调整跳转时间}}else{$_SESSION['refresh_times']=0;$_SESSION['last_time']=$cur_time;}?>