function WriteIPMark($strFile)  
        {  
            $ip=$_SERVER["REMOTE_ADDR"];  
            $str_date = date('Y-m-d H:i:s',time());  
      
            $fp = fopen($strFile, "a");  
            if($fp)  
            {  
                fwrite($fp,$ip);  
                fwrite($fp," ");  
                fwrite($fp,$str_date);  
                fwrite($fp,"\r\n");  
            }   
            fclose($fp);   
        }