<?php
    /* (c) deadinat0r */
    class m2mpQuery {
        protected $sIP, $sPort;
        private $sSocket, $sPing = 0, $sOnline = false;

        /* returns ping if connected, otherwise false */
        public function __construct($ip, $port = 27015, $timeout = 2) {
            $this->sIP = $ip;
            $this->sPort = (int)$port+1;
            $this->sSocket = @fsockopen('udp://'.$this->sIP, $this->sPort, $erNo, $erStr);
            if($this->sSocket) {
                $this->sOnline = true;
                socket_set_timeout($this->sSocket, $timeout);
                return $this->getPing();
            }
            return false;
        }

        public function __destruct() {
            @fclose($this->sSocket);
        }

        public function isOnline() {
            return $this->sOnline;
        }

        /* get players, use foreach for listing (see example) */
        public function getPlayers() {
            $r = $this->sendPacket('M2MPl');

            $r = str_replace('M2MPl@', '', $r);
            $r = str_replace($this->getInfo('players').'@', '', $r); // not the best solution, but works
            $i = explode('|', $r);

            $return = array();
            if(sizeof($i) > 0) {
                $maxPlayers = $this->getInfo('maxplayers');
                for($x = 0; $x < $maxPlayers; $x++) {
                    if(@$i[$x]) {
                        $ex = explode('/', $i[$x]);
                        $return[] = array('id' => $ex[0], 'name' => $ex[1], 'ping' => $ex[2]);
                    }
                }
            }

            return $return;
        }



        /* possible infos:
            'name' => servername
            'players' => plaayercount
            'maxplayers' => maxplayercount
            'gamemode' => gamemode name
            'password' => password (yes = 1/no = 0)
        */
        public function getInfo($info = '') {
            $r = $this->sendPacket('M2MPi');
            if(!$r) return false;

            $r = str_replace('M2MPi@', '', $r);
            $i = explode('@', $r);

            $return = array('name' => $i[0], 'players' => $i[1], 'maxplayers' => $i[2], 'gamemode' => $i[3], 'password' => $i[4]);

            return ($info === '') ? ($return) : ($return[$info]);
        }

        /* get ping */
        public function getPing() {
            if($this->sPing === 0) {
                $start = microtime(true);
                $this->sendPacket('M2MPp');
                $this->sPing = round((microtime(true)-$start) * 1000, 0);
            }
            return $this->sPing;
        }

        /* used for sending packets, you can send custom packets directly from your object */
        public function sendPacket($packet) {
            fputs($this->sSocket, $packet);
            $r = fread($this->sSocket, 1024);
            if(!@$r || @$r === '') return false;
            else return $r;
        }
    }

    echo '<h3>Some Infos (Server: 176.65.141.8)</h3>';

    $query = new m2mpQuery('176.65.141.8'); // Testserver
    if($query !== false) {
        echo 'The server is ';
        if(!$query->isOnline()) echo 'offline';
        else {
            echo 'online';
            echo '<br />';

            $info = $query->getInfo();

            echo 'Servername: '.$info['name'];
            echo '<br />';

            echo 'Gamemode: '.$query->getInfo('gamemode');
            echo '<br />';

            echo 'Ping: '.$query->getPing();
            echo '<br /><br />';

            echo '<h3>Players</h3>';
            if($info['players'] > 0) {
                $players = $query ->getPlayers();
                echo '<table><thead><tr><td>ID</td><td>Name</td><td>Ping</td></thead><tbody>';
                foreach($players as $p) echo '<tr><td>'.$p['id'].'</td><td>'.$p['name'].'</td><td>'.$p['ping'].'</td></tr>';
                echo '</table></tbody>';
            }
            else echo 'No players online.';
        }
    }
?>