• 中山php|最優網絡中山做網站 中山php建站

    最優良人

    2013/03/29 at 18:55

    php防止刷流量攻擊

    <?php
    //查詢禁止IP
    $ip =$_SERVER['REMOTE_ADDR'];
    $fileht=".htaccess2";
    if(!file_exists($fileht))file_put_contents($fileht,"");
    $filehtarr=@file($fileht);
    if(in_array($ip."\r\n",$filehtarr))die("Warning:"."<br>"."Your IP address are forbided by some reason, IF you have any question Pls emill to shop@mydalle.com!");

    //加入禁止IP
    $time=time();
    $fileforbid="log/forbidchk.dat";
    if(file_exists($fileforbid))
    { if($time-filemtime($fileforbid)>60)unlink($fileforbid);
    else{
    $fileforbidarr=@file($fileforbid);
    if($ip==substr($fileforbidarr[0],0,strlen($ip)))
    {
    if($time-substr($fileforbidarr[1],0,strlen($time))>600)unlink($fileforbid);
    elseif($fileforbidarr[2]>600){file_put_contents($fileht,$ip."\r\n",FILE_APPEND);unlink($fileforbid);}
    else{$fileforbidarr[2]++;file_put_contents($fileforbid,$fileforbidarr);}
    }
    }
    }
    //防刷新
    $str="";
    $file="log/ipdate.dat";
    if(!file_exists("log")&&!is_dir("log"))mkdir("log",0777);
    if(!file_exists($file))file_put_contents($file,"");
    $allowTime = 120;//防刷新時間
    $allowNum=10;//防刷新次數
    $uri=$_SERVER['REQUEST_URI'];
    $checkip=md5($ip);
    $checkuri=md5($uri);
    $yesno=true;
    $ipdate=@file($file);
    foreach($ipdate as $k=>$v)
    { $iptem=substr($v,0,32);
    $uritem=substr($v,32,32);
    $timetem=substr($v,64,10);
    $numtem=substr($v,74);
    if($time-$timetem<$allowTime){
    if($iptem!=$checkip)$str.=$v;
    else{
    $yesno=false;
    if($uritem!=$checkuri)$str.=$iptem.$checkuri.$time."1\r\n";
    elseif($numtem<$allowNum)$str.=$iptem.$uritem.$timetem.($numtem+1)."\r\n";
    else
    {
    if(!file_exists($fileforbid)){$addforbidarr=array($ip."\r\n",time()."\r\n",1);file_put_contents($fileforbid,$addforbidarr);}
    file_put_contents("log/forbided_ip.log",$ip."--".date("Y-m-d H:i:s",time())."--".$uri."\r\n",FILE_APPEND);
    $timepass=$timetem+$allowTime-$time;
    die("Warning:"."<br>"."Sorry,you are forbided by refreshing frequently too much, Pls wait for ".$timepass." seconds to continue!");
    }
    }
    }
    }
    if($yesno) $str.=$checkip.$checkuri.$time."1\r\n";
    file_put_contents($file,$str);

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