VCMP Query

<?php
class VCMPQuery {

    private $Socket = false;

    private $aData = array();

    private $aServer = array();

    public function __construct($Server, $Port = 5192)
    {
        $this->aServer[0] = $Server;
        $this->aServer[1] = $Port;
        $this->Socket = fsockopen('udp://'.$Server, $Port, $Errno, $Errstr, 2);
        $this->aData[0] = true;
        if(!$this->Socket)
        {
            $this->aData[0] = false;
            return;
        }

        socket_set_timeout($this->Socket, 2);

        $sPacket = 'VCMP';
        $sPacket .= chr(strtok($Server, '.'));
        $sPacket .= chr(strtok('.'));
        $sPacket .= chr(strtok('.'));
        $sPacket .= chr(strtok('.'));
        $sPacket .= chr($Port & 0xFF);
        $sPacket .= chr($Port >> 8 & 0xFF);

        fwrite($this->Socket, $sPacket.'p4150');

        if(fread($this->Socket, 10))
        {
            if(fread($this->Socket, 5) == 'p4150')
            {
                $this->aData[0] = true;
                return;
            }
        }

        $this->aData[0] = false;
    }

    public function getInfo()
    {
        // Request server info and player info
        $aData = array();

        @fwrite($this->Socket, $this->createPacket('i'));

        fread($this->Socket, 11);

        $aData['password'] = ord(fread($this->Socket, 1));

        $aData['players'] = ord(fread($this->Socket, 2));

        $aData['maxplayers'] = ord(fread($this->Socket, 2));

        $iStrlen = ord(fread($this->Socket, 4));
        if(!$iStrlen) return -1;

        $aData['hostname'] = (string) fread($this->Socket, $iStrlen);

        $iStrlen = ord(fread($this->Socket, 4));
        $aData['gamemode'] = (string) fread($this->Socket, $iStrlen);

        $iStrlen = ord(fread($this->Socket, 4));
        $aData['mapname'] = (string) fread($this->Socket, $iStrlen);

        return $aData;
    }
    public function getPlayers()
    {
        fwrite($this->Socket, $this->createPacket('c'));
        fread($this->Socket, 11);
        $plr_count = ord(fread($this->Socket, 2));
        if ($plr_count > 0)
        {
            $players = array();
            for ($i=0; $i<$plr_count; $i++)
            {
                $strlen = ord(fread($this->Socket, 1));
                $plrname = fread($this->Socket, $strlen);
                $score = $this->getLong(fread($this->Socket, 4));
                $players[] = array( $plrname, $score);
            }
            return $players;
        }
        return false;

    }

    public function __destruct()
    {
        @fclose($this->Socket);
    }

    private function createPacket($req)
    {
        $sPacket = 'VCMP';
        $sPacket .= chr(strtok($this->aServer[0], '.'));
        $sPacket .= chr(strtok('.'));
        $sPacket .= chr(strtok('.'));
        $sPacket .= chr(strtok('.'));
        $sPacket .= chr($this->aServer[1] & 0xFF);
        $sPacket .= chr($this->aServer[1] >> 8 & 0xFF);
        $sPacket .= $req;

        return $sPacket;
    }

    public function isAlive()
    {
        return $this->aData[0];
    }

    private function getLong($dat)
    {
        $num=0;
        if ((ord(substr($dat,3,1)) & 128) > 0) {
            for ($i=0; $i<strlen($dat); $i++) {
                $num-=((255-ord(substr($dat,$i,1))) << 8*$i);
            }
            $num--;
        } else {
            for ($i=0; $i<strlen($dat); $i++) {
                $num+=(ord(substr($dat,$i,1)) << 8*$i);
            }
        }
        return $num;
    }

}
?>