get_tw_master_old-example

<?php

/******************************************************************\
|* Copyright (c) by Starlex.de
|*
|* Visit:
|*      http://teeworlds.com
|*      http://teeworlds.de
|*      http://teeworlds-community.de
|*
|* License:
|*      http://creativecommons.org/licenses/by-nc-sa/3.0/deed.de
|*
\******************************************************************/

$masters = Array(
    "master1.teeworlds.com:8300",
    "master2.teeworlds.com:8300",
    "master3.teeworlds.com:8300",
    "master4.teeworlds.com:8300");

foreach ($masters as $ms) {
    if($servers = get_tw_master($ms))
    {
        foreach ($servers as $server)
        {
            echo $server."<br>";
        }
    }
}


function get_tw_master($server) {

    if ($socket = stream_socket_client('udp://'.$server , $errno, $errstr, 1))
    {
        stream_set_timeout($socket, 1);
        fwrite($socket, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xffreqt");
        $servers = Array();
        $response = fread($socket, 2048);
        if ($response)
        {
            while (strlen($response) >= 1)
            {
                $response = substr($response, 14);
                for ($i = 0; $i <= (strlen($response)-1) ; $i += 6) {
                    $server =   Array(
                            "ip1" => ord($response{$i}),
                            "ip2" => ord($response{$i+1}),
                            "ip3" => ord($response{$i+2}),
                            "ip4" => ord($response{$i+3}),
                            "port" => strToint($response{$i+5}.$response{$i+4}));

                    $serveraddresse = $server["ip1"].".".$server["ip2"].".".$server["ip3"].".".$server["ip4"].":".$server["port"];
                    $servers[] = $serveraddresse;
                }
                $response = fread($socket, 2048);
            }
            return $servers;
        } else {
            return FALSE;
        }
    } else {
        return FALSE;
    }
}

function strToint($string)
{
    $hex = "";
    for ($i=0; $i < strlen($string); $i++)
    {
        $hex .= dechex(ord($string[$i]));
    }
    $int = hexdec($hex);
    return $int;
}
?>