Довести скрипт мониторинга до ума

<?php
   $fp = @fsockopen("udp://$_GET[ip]", $_GET["port"], $errno, $errstr);
    
   $server_name = "Неизвестно";
   $server_online = "<font style=\"color: red;\">Выключен</font>";
   $server_player = "N/A";
   $server_maxplayer = "N/A";
   $server_mapname = "Неизвестно";
   $mapimg = "server_offline.png";
    
   if($fp)
   {
      stream_set_timeout($fp, 2);
      
      fwrite($fp, "\xFF\xFF\xFF\xFFTSource Engine Query\x00");
      $buffer = fread($fp, 8096);
      fclose($fp);
      
      if($buffer)
      {
         $tmp = explode("\x00", $buffer);
         $place = strlen($tmp[0].$tmp[1].$tmp[2].$tmp[3].$tmp[4]) + 5;
         $version = ord($buffer[4]);
         $server_online = "<font style=\"color: green;\">Включен</font>";
         $server_player = ord($buffer[$place]);
         $server_maxplayer = ord($buffer[$place + 1]);
         $mapimg = "nomap_images.png";
          
         if($version == 109)
         {
            $server_name = $tmp[1];
            $server_mapname = $tmp[2];
         }
         else
         {
            $server_name = substr($tmp[0], 6);
            $server_mapname = $tmp[1];
         }
          
         if(file_exists("maps/". $server_mapname .".jpg")) {$mapimg = $server_mapname;}
      }
   }
    
   header("Content-Type: text/javascript");
    
   echo "var info = {";
   echo "'ip_port':'$_GET[ip]:$_GET[port]', 'hostname':'$server_name', 'map':'$server_mapname', 'mapimg':'<img src=\"maps/$mapimg\" alt=\"\"/>', 'players':'$server_player', 'maxplayers':'$server_maxplayer', 'status':'$server_online'";
   echo "};";
?>