status.class.php

<?php

    class MinecraftServerStatus {

        private $timeout;

        public function __construct($timeout = 2) {
            $this->timeout = $timeout;
        }

        public function getStatus($host = '127.0.0.1', $port = 25565, $version = '1.7.*') {

            if (substr_count($host , '.') != 4) $host = gethostbyname($host);

            $serverdata = array();
            $serverdata['hostname'] = $host;
            $serverdata['version'] = false;
            $serverdata['protocol'] = false;
            $serverdata['players'] = false;
            $serverdata['maxplayers'] = false;
            $serverdata['motd'] = false;
            $serverdata['motd_raw'] = false;
            $serverdata['favicon'] = false;
            $serverdata['ping'] = false;

            $socket = $this->connect($host, $port);

            if(!$socket) {
                return false;
            }

            if(preg_match('/1.7|1.8/',$version)) {

                $start = microtime(true);

                $handshake = pack('cccca*', hexdec(strlen($host)), 0, 0x04, strlen($host), $host).pack('nc', $port, 0x01);

                socket_send($socket, $handshake, strlen($handshake), 0); //give the server a high five
                socket_send($socket, "\x01\x00", 2, 0);
                socket_read( $socket, 1 );

                $ping = round((microtime(true)-$start)*1000); //calculate the high five duration

                $packetlength = $this->read_packet_length($socket);

                if($packetlength < 10) {
                    return false;
                }

                socket_read($socket, 1);

                $packetlength = $this->read_packet_length($socket);

                $data = socket_read($socket, $packetlength, PHP_NORMAL_READ);

                if(!$data) {
                    return false;
                }

                $data = json_decode($data);

                $serverdata['version'] = $data->version->name;
                $serverdata['protocol'] = $data->version->protocol;
                $serverdata['players'] = $data->players->online;
                $serverdata['maxplayers'] = $data->players->max;

                $motd = $data->description;
                $motd = preg_replace("/(§.)/", "",$motd);
                $motd = preg_replace("/[^[:alnum:][:punct:] ]/", "", $motd);

                $serverdata['motd'] = $motd;
                $serverdata['motd_raw'] = $data->description;
                $serverdata['favicon'] = $data->favicon;
                $serverdata['ping'] = $ping;

            } else {

                $start = microtime(true);

                socket_send($socket, "\xFE\x01", 2, 0);
                $length = socket_recv($socket, $data, 512, 0);

                $ping = round((microtime(true)-$start)*1000);//calculate the high five duration

                if($length < 4 || $data[0] != "\xFF") {
                    return false;
                }

                $motd = "";
                $motdraw = "";

                //Evaluate the received data
                if (substr((String)$data, 3, 5) == "\x00\xa7\x00\x31\x00"){

                    $result = explode("\x00", mb_convert_encoding(substr((String)$data, 15), 'UTF-8', 'UCS-2'));
                    $motd = $result[1];
                    $motdraw = $motd;

                } else {

                    $result = explode('§', mb_convert_encoding(substr((String)$data, 3), 'UTF-8', 'UCS-2'));
                        foreach ($result as $key => $string) {
                            if($key != sizeof($result)-1 && $key != sizeof($result)-2 && $key != 0) {
                                $motd .= '§'.$string;
                            }
                        }
                        $motdraw = $motd;
                    }

                    $motd = preg_replace("/(§.)/", "", $motd);
                    $motd = preg_replace("/[^[:alnum:][:punct:] ]/", "", $motd);

                    $serverdata['version'] = $result[0];
                    $serverdata['players'] = $result[sizeof($result)-2];
                    $serverdata['maxplayers'] = $result[sizeof($result)-1];
                    $serverdata['motd'] = $motd;
                    $serverdata['motd_raw'] = $motdraw;
                    $serverdata['ping'] = $ping;

            }

            $this->disconnect($socket);

            return $serverdata;

        }

        private function connect($host, $port) {
            $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
            if (!@socket_connect($socket, $host, $port)) {
                $this->disconnect($socket);
                return false;
            }
            return $socket;
        }

        private function disconnect($socket) {
            if($socket != null) {
                socket_close($socket);
            }
        }

        private function read_packet_length($socket) {
            $a = 0;
            $b = 0;
            while(true) {
                $c = socket_read($socket, 1);
                if(!$c) {
                    return 0;
                }
                $c = Ord($c);
                $a |= ($c & 0x7F) << $b++ * 7;
                if( $b > 5 ) {
                    return false;
                }
                if(($c & 0x80) != 128) {
                    break;
                }
            }
            return $a;
        }

    }