PHP Quake3 Rcon

<?php

function urt_query($ip, $port, $query, $answer = true) {
    $fp = fsockopen("udp://$ip",$port, $errno, $errstr, 2);
    stream_set_blocking( $fp , 0);
    socket_set_timeout($fp,2);
    stream_set_timeout($fp,2);

    if (!$fp)   {
        echo "$errstr ($errno)<br/>\n";
    } else {
        $query = chr(0xff) . chr(0xff) . chr(0xff) . chr(0xff) . $query;
        $tmp = fwrite($fp,$query);
    }
    if ( !$answer)
        return;

    $data = '';
    $tmp1 = microtime(true);
    do {
        $d = fread ($fp, 2048);
        $data .= $d;

        if (strlen($d) == 0)
            usleep( 50 );
    } while ( strlen($d) == 0  &&  (microtime(true) - $tmp1 < 3 ));

    if (microtime(true) - $tmp1 > 3)
        return false;


    $nb_zero = 0;
    do {
        $d = fread ($fp, 2048);
        $data .= $d;

        if (strlen($d) == 0) {
            $nb_zero++;
            usleep(50);
        }else
            $nb_zero = 0;
    } while ( $nb_zero < 5 );

    fclose ($fp);
    return $data;
}

function status ($ip, $port ) {
    $data = urt_query($ip, $port, 'getstatus' , true );
    return explode_backslash($data);
}

function rcon ($ip, $port, $rcon_pass, $command, $answer = true) {
    $data = urt_query($ip, $port, 'rcon "' . $rcon_pass . '" ' . $command , $answer );
    if ( substr($data,0 , -1) == chr(0xff) . chr(0xff) . chr(0xff) . chr(0xff) . "print\nBad rconpassword." ){ session_destroy(); echo 'Bad rconpassword'; die(); }

    if (! $answer)
        return $data;

    $data = preg_replace ("/....print\n/", "", $data);
    return $data;
}

function rcon_status ($ip, $port, $rcon_pass) {
    $data = rcon ($ip, $port, $rcon_pass, "status");
    $data = explode ("\n", $data);

    # ok, let's deal with the following :
    #
    # map: q3wcp9
    # num score ping name            lastmsg address               qport rate
    # --- ----- ---- --------------- ------- --------------------- ----- -----
    #   1    19   33 l33t^n1ck       33 62.212.106.216:27960   5294 25000

    $map = array_shift($data); // 1st line : map q3wcp9
    $map = preg_replace('/^map: /','',$map);
    array_shift($data); // 2nd line : col headers
    array_shift($data); // 3rd line : -- ------ ----
    array_pop($data);
    array_pop($data); // two empty lines at the end, go figure.

    $result = array();
    foreach ($data as $line) {
        $player = $line;
        // preg_match_all("/^\s*(\d+)\s*(\d+)\s*(\d+)(.*?)(\d*)\s*(\S*)\s*(\d*)\s*(\d*)\s*$/", $player, $out); // weeeeeeeeee \o/
        preg_match_all("/^\s*(\d+)\s*(\-?\d+)\s*(\d+)\s*(.*?)\s*(\d*)\s*(\S*)\s*(\d*)\s*(\d*)\s*$/", $player, $out);
        $num = $out[1][0];
        $score = $out[2][0];
        $ping = $out[3][0];
        $name = trim($out[4][0]);
        $lastmsg = $out[5][0];
        $address = $out[6][0];
        if ($address != 'bot')
            $address = preg_replace ("/:.*$/", "", $address);
        $qport = $out[7][0];
        $rate = $out[8][0];

        $result[$num] = array(
                        'num'=> $num,
                        'score'=> $score,
                        'ping'=> $ping,
                        'name'=> $name,
                        'lastmsg'=> $lastmsg,
                        'address'=> $address,
                        'qport'=> $qport,
                        'rate'=> $rate,);
    }
    return array( 'map' => $map , 'data' => $result);
}