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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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