http://mcstatus.sydcul.com/status.php

<?php

    $ip = explode(':', $_GET['ip']);

    if(empty($_GET['ip'])) {
        echo('unset');
        exit;
    }

    $address = $ip[0];
    $port = $ip[1];

    if(empty($port)) {
        $port = 25565;
    }

    $socket = @fsockopen($address, $port, $errno, $errstr, 1.0);

    if ($socket === false){
        echo('connectionfailed');
        exit;
    }

    fwrite($socket, "\xfe\x01");

    $data = fread($socket, 256);

    if (substr($data, 0, 1) != "\xff"){
        echo('minecraftfailed');
        exit;
    }

    if (substr($data, 3, 5) == "\x00\xa7\x00\x31\x00"){
        $data = explode("\x00", mb_convert_encoding(substr($data, 15), 'UTF-8', 'UCS-2'));
    }else{
        $data = explode('§', mb_convert_encoding(substr($data, 3), 'UTF-8', 'UCS-2'));
    }

    $info = array(
        'version'        => $data[0],
        'motd'            => $data[1],
        'players'        => intval($data[2]),
        'max_players'    => intval($data[3]),
    );

    print_r($info);
?>