<?php
function strToHex($string)
{
    $hex='';
    for ($i=0; $i < strlen($string); $i++)
    {
        $hex .= dechex(ord($string[$i]));
    }
    return $hex;
}
function hexToStr($hex)
{
    $string='';
    for ($i=0; $i < strlen($hex)-1; $i+=2)
    {
        $string .= chr(hexdec($hex[$i].$hex[$i+1]));
    }
    return $string;
}
function computeUnsignedCRC32($str){
   sscanf(crc32($str), "%u", $var);
   $var = dechex($var + 0);
   return $var;
}

function dec_to_hex($dec)
{
    $sign = ""; // suppress errors
    $h = null;
    if( $dec < 0){ $sign = "-"; $dec = abs($dec); }
    $hex = Array( 0 => 0, 1 => 1, 2 => 2, 3 => 3, 4 => 4, 5 => 5,
                  6 => 6, 7 => 7, 8 => 8, 9 => 9, 10 => 'a',
                  11 => 'b', 12 => 'c', 13 => 'd', 14 => 'e',
                  15 => 'f' );

    do
    {
        $h = $hex[($dec%16)] . $h;
        $dec /= 16;
    }
    while( $dec >= 1 );

    return $sign . $h;
}
function get_checksum($cs)
{
    $var = computeUnsignedCRC32($cs);
    //echo "crchex: ".$var."<br/>";
    $x = ('0x');
    $a = substr($var, 0, 2);
    $a = $x.$a;
    $b = substr($var, 2, 2);
    $b = $x.$b;
    $c = substr($var, 4, 2);
    $c = $x.$c;
    $d = substr($var, 6, 2);
    $d = $x.$d;
    return chr($d).chr($c).chr($b).chr($a);
}
function rcon($serverip,$serverport,$rconpassword,$cmd){
    $passhead = chr(0xFF).chr(0x00);
    $head = chr(0x42).chr(0x45);
    $pass = $passhead.$rconpassword;
    $answer = "";
    $checksum = get_checksum($pass);
    $loginmsg = $head.$checksum.$pass;
    $rcon = fsockopen("udp://".$serverip, $serverport, $errno, $errstr, 1);
    stream_set_timeout($rcon, 1);
    if (!$rcon) {
        echo "ERROR: $errno - $errstr<br />\n";
    } else {
        fwrite($rcon, $loginmsg);
        $res = fread($rcon, 16);

        $cmdhead = chr(0xFF).chr(0x01).chr(0x00);
        //$cmd = "Players";
        $cmd = $cmdhead.$cmd;
        $checksum = get_checksum($cmd);
        $cmdmsg = $head.$checksum.$cmd;
        $hlen = strlen($head.$checksum.chr(0xFF).chr(0x01));

        fwrite($rcon, $cmdmsg);
        $answer = fread($rcon, 102400);
        $answer = preg_replace ('/BE(.*)ÿ/' , '' , $answer);

        if ( strToHex(substr($answer, 9, 1)) == "0"){
            $count = strToHex(substr($answer, 10, 1));
            echo $count."<br/>";
            for ($i = 0; $i < $count-1; $i++){
                $newtext = fread($rcon, 102400);
                $answer .= $newtext;
            }
        }
        $cmd = "Exit";
        $cmd = $cmdhead.$cmd;
        $checksum = get_checksum($cmd);
        $cmdmsg = $head.$checksum.$cmd;
        fwrite($rcon, $cmdmsg);
    }
    return $answer;
}
$severanswer = rcon('xx',xx,'xx','xx');

        $players=explode("\n", $severanswer);

        $spieler = array();

        array_shift($players);
        array_shift($players);
        array_shift($players);

        $players  = preg_replace ('/ +/' , ' ' , $players);

        for ( $i = 0; $i < count ( $players ); $i++ )
        {
            $spieler[] = explode(" ", $players[$i]);
        }
        $spielername = "";
        $first = "";
        for ( $i = 0; $i <= count ( $spieler ); $i++ )
        {
            $count = count ( $spieler[$i] );
            for ( $a = 0; $a <= $count; $a++ )
            {
                if($a == 3) {
                    $spieler[$i][3] = preg_replace ('#\(.*?\)#m' , '' , $spieler[$i][3]);
                }
                if($a > 3) {
                        if($first == "") {
                            $text = "";
                        } else {
                            $text = " ";
                        }
                    if($spieler[$i][$a] != "(Lobby)") {
                        $spielername .= $text;
                        $spielername .= utf8_decode($spieler[$i][$a]);
                    }
                        unset($spieler[$i][$a]);
                    $first = "bla";

                    if($a == $count) {
                        if($spielername != "") {
                            array_push($spieler[$i], $spielername);
                        }
                    }
                }
            }
            $first = "";
            $spielername = "";
        }
        print_r($spieler);
        print_r($severanswer)

?>