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              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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