LU Query - Class

<?php
class LUQuery {

    private $Socket = false;

    private $aData = array();

    private $servInfoReq = 0;
    private $playerInfoReq = 0;
    private $teamInfoReq = 0;
    private $playerInfoExtraReq = 0;

    public function __construct($Server, $Port = 2301)
    {
        $this->Defines();
        $this->Socket = fsockopen('udp://'.$Server, $Port, $Errno, $Errstr, 2);
        $this->aData[0] = true;
        if(!$this->Socket)
        {
            $this->aData[0] = false;
            return;
        }

        socket_set_timeout($this->Socket, 2);

        $packet = "\xFF\xFFUGP\x00";
        $packet .= "\x01";
        $packet .= ugp_header_ping;
        fwrite($this->Socket, $packet);
        if (fread($this->Socket, 2))
        {
            if (fread($this->Socket, 3) == "UGP")
            {
                $this->aData[0] = true;
                return;
            }
        }
        $this->aData[0] = false;
    }

    public function GetInfo()
    {
        // Request server info and player info
        $aData = array();
        $this->servInfoReq = ugp_servinf_name | ugp_servinf_mode | ugp_servinf_playercount | ugp_servinf_maxplayers;
        $this->playerInfoReq = ugp_playerlist_id | ugp_playerlist_name | ugp_playerlist_team | ugp_playerlist_score | ugp_playerlist_kills | ugp_playerlist_deaths | ugp_playerlist_extraflags;
        $this->playerInfoExtraReq = ugp_playerlist_extra_ping | ugp_playerlist_extra_pos | ugp_playerlist_extra_health | ugp_playerlist_extra_armour | ugp_playerlist_extra_skin;
        fwrite( $this->Socket, $this->createPacket( ugp_req_serverinfo | ugp_req_playerlist ) );
        fread($this->Socket, 10);
        $PacketType = ord(fread($this->Socket,1)) - 128;
        if ( $PacketType == 1 )
        {
            $GameID = ord(fread($this->Socket,1));
            $aData["GameID"] = $GameID;
            $Flags = ord( fread($this->Socket,1) );
            if ( $Flags & ugp_req_serverinfo )
            {
                $ServerInfoReply = ord( fread($this->Socket,1) );

                if ( $ServerInfoReply & ugp_servinf_gamename )
                {
                    $GameNameLen = ord( fread($this->Socket,1) );
                    $GameName = fread($this->Socket,$GameNameLen);
                    $GameName = preg_replace('/[^(\x20-\x7F)]*/','', $GameName);
                    $aData["GameName"] = $GameName;
                }
                if ( $ServerInfoReply & ugp_servinf_flags )
                {
                    $ServerInfoReplyFlags = ord( fread($this->Socket,1) );
                    $GameName = preg_replace('/[^(\x20-\x7F)]*/','', fread($this->Socket,$GameNameLen) );
                    $aData["GameName"] = $GameName;
                }
                if ( $ServerInfoReply & ugp_servinf_name )
                {
                    $ServerNameLen = ord( fread($this->Socket,1) );
                    $ServerName = preg_replace('/[^(\x20-\x7F)]*/','', fread($this->Socket,$ServerNameLen) );
                    $aData["ServerName"] = $ServerName;
                }
                if ( $ServerInfoReply & ugp_servinf_mode )
                {
                    $ServerModeLen = ord( fread($this->Socket,1) );
                    $ServerMode = preg_replace('/[^(\x20-\x7F)]*/','', fread($this->Socket,$ServerModeLen) );

                    $aData["ServerMode"] = $ServerMode;
                }
                if ( $ServerInfoReply & ugp_servinf_map )
                {
                    $ServerMapLen = ord( fread($this->Socket,1) );
                    $ServerMap = preg_replace('/[^(\x20-\x7F)]*/','', fread($this->Socket,$ServerMapLen) );

                    $aData["ServerMap"] = $ServerMap;
                }
                if ( $ServerInfoReply & ugp_servinf_playercount )
                {
                    $ServerPlayers = ord( fread($this->Socket,1) );

                    $aData["ServerPlayers"] = $ServerPlayers;
                }
                if ( $ServerInfoReply & ugp_servinf_maxplayers )
                {
                    $ServerMaxPlayers = ord( fread($this->Socket,1) );

                    $aData["ServerMaxPlayers"] = $ServerMaxPlayers;
                }
            }
            if ( $Flags & ugp_req_teamlist )
            {
                //echo fread($this->Socket,9000);
            }
            if ( $Flags & ugp_req_playerlist )
            {
                $Players = ord( fread($this->Socket, 1) );
                if ( $Players > 0 )
                {
                    $PlayerReply = ord( fread($this->Socket,1) );
                    if ( $PlayerReply & ugp_playerlist_extraflags )
                    {
                        $ExtraFlags = ord( fread($this->Socket,1) );
                    }

                    for($i = 1; $i <= $Players; $i++)
                    {
                        if ( isset( $ExtraFlags ) )
                        {
                            $aData["Player"][$i]["ExtraFlags"] = $ExtraFlags;
                        }
                        if ( $PlayerReply & ugp_playerlist_id )
                        {
                            $NickID = ord(fread($this->Socket,1));

                            $aData["Player"][$i]["ID"] = $NickID;
                        }
                        if ( $PlayerReply & ugp_playerlist_name )
                        {
                            $NickLen = ord(fread($this->Socket,1));
                            $Nick = preg_replace('/[^(\x20-\x7F)]*/','', fread($this->Socket,$NickLen) );

                            $aData["Player"][$i]["Nick"] = $Nick;
                        }
                        if ( $PlayerReply & ugp_playerlist_team )
                        {
                            $Team = ord( fread($this->Socket,1) );

                            $aData["Player"][$i]["Team"] = $Team;
                        }
                        if ( $PlayerReply & ugp_playerlist_score )
                        {
                            $Score = ord( fread($this->Socket,4) );

                            $aData["Player"][$i]["Score"] = $Score;
                        }
                        if ( $PlayerReply & ugp_playerlist_kills )
                        {
                            $Kills = ord( fread($this->Socket,4) );

                            $aData["Player"][$i]["Kills"] = $Kills;
                        }
                        if ( $PlayerReply & ugp_playerlist_deaths )
                        {
                            $Deaths = ord( fread($this->Socket,4) );

                            $aData["Player"][$i]["Deaths"] = $Deaths;
                        }
                        if ( $PlayerReply & ugp_playerlist_extraflags )
                        {
                            if ( $ExtraFlags & ugp_playerlist_extra_ping )
                            {
                                $ping = ord( fread($this->Socket,2) );
                                $aData["Player"][$i]["Ping"] = $ping;
                            }
                            if ( $ExtraFlags & ugp_playerlist_extra_timejoined )
                            {
                                $timejoined = ord( fread($this->Socket,8) );
                                $aData["Player"][$i]["TimeJoined"] = $timejoined;
                            }
                            if ( $ExtraFlags & ugp_playerlist_extra_pos )
                            {
                                $posXArr = unpack( "f", fread($this->Socket,4) );
                                $posYArr = unpack( "f", fread($this->Socket,4) );
                                $posZArr = unpack( "f", fread($this->Socket,4) );
                                $posX = $posXArr[1];
                                $posY = $posYArr[1];
                                $posZ = $posZArr[1];
                                $aData["Player"][$i]["Pos"]["X"] = $posX;
                                $aData["Player"][$i]["Pos"]["Y"] = $posY;
                                $aData["Player"][$i]["Pos"]["Z"] = $posZ;
                            }
                            if ( $ExtraFlags & ugp_playerlist_extra_health )
                            {
                                $health = ord( fread($this->Socket,1) );
                                $aData["Player"][$i]["Health"] = $health;
                            }
                            if ( $ExtraFlags & ugp_playerlist_extra_armour )
                            {
                                $armour = ord( fread($this->Socket,1) );
                                $aData["Player"][$i]["Armour"] = $armour;
                            }
                            if ( $ExtraFlags & ugp_playerlist_extra_skin )
                            {
                                $skin = ord( fread($this->Socket,1) );
                                $aData["Player"][$i]["Skin"] = $skin;
                            }

                        }
                    }
                }
            }
        }
        return $aData;
    }
    private function createPacket($req)
    {
        $packet = "\xFF\xFFUGP\x00"; //Header
        $packet .= "\x01"; //Version
        $packet .= ugp_header_query; //Type, query or ping
        $packet .= chr($req);
        if ( $req & ugp_req_serverinfo )
        {
            $packet .= chr($this->servInfoReq);
        }
        if ( $req & ugp_req_teamlist )
        {
            $packet .= chr($this->teamInfoReq);
        }
        if ( $req & ugp_req_playerlist )
        {
            $packet .= chr($this->playerInfoReq);

            if ( $this->playerInfoReq & ugp_playerlist_extraflags )
            {
                $packet .= chr($this->playerInfoExtraReq);
            }
        }
        if ( $req & ugp_req_rulelist )
        {
            $packet .= chr(ugp_req_rulelist);
        }
        return $packet;
    }

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

    private function Defines()
    {
        // Header Flags
        define("ugp_header_ping", "\x00" );
        define("ugp_header_query", "\x01" );

        // Request Flags
        define("ugp_req_serverinfo", 0x01 );
        define("ugp_req_playerlist", 0x02 );
        define("ugp_req_teamlist", 0x04 );
        define("ugp_req_rulelist", 0x08 );

        // Server Info Flags
        define("ugp_servinf_gamename", 0x01 );
        define("ugp_servinf_flags", 0x02 );
        define("ugp_servinf_name", 0x04 );
        define("ugp_servinf_mode", 0x08 );
        define("ugp_servinf_map", 0x10 );
        define("ugp_servinf_playercount", 0x20 );
        define("ugp_servinf_maxplayers", 0x40 );

        // Server Info Server Flags (Bit 2 in info flags)
        define("ugp_servinfflags_passworded", 0x01);
        define("ugp_servinfflags_version", 0x02);
        define("ugp_servinfflags_os", 0x04);

        // Team List Flags
        define("ugp_teamlist_name", 0x01);
        define("ugp_teamlist_score", 0x02);
        define("ugp_teamlist_playercount", 0x04);
        define("ugp_teamlist_colour", 0x08);

        // Player List Flags
        define("ugp_playerlist_id", 0x01);
        define("ugp_playerlist_name", 0x02);
        define("ugp_playerlist_team", 0x04);
        define("ugp_playerlist_score", 0x08);
        define("ugp_playerlist_kills", 0x10);
        define("ugp_playerlist_deaths", 0x20);
        define("ugp_playerlist_extraflags", 0x40);

        define("ugp_playerlist_extra_ping", 0x01);
        define("ugp_playerlist_extra_timejoined", 0x02);
        define("ugp_playerlist_extra_pos", 0x04);
        define("ugp_playerlist_extra_health", 0x08);
        define("ugp_playerlist_extra_armour", 0x10);
        define("ugp_playerlist_extra_skin", 0x20);
    }
}
?>