MCPE ping class for PHP

McpePing.php

<?php
/**
 * MIT licensed.
 */

namespace Minimum\Minecraft;


class McpePing
{
    const RAKNET_MAGIC = "\x00\xff\xff\x00\xfe\xfe\xfe\xfe\xfd\xfd\xfd\xfd\x12\x34\x56\x78";

    private $description;
    private $protocolVersion;
    private $protocolId;
    private $playersOnline;
    private $playersMax;

    /**
     * McpePing constructor.
     * @param $description
     * @param $protocolVersion
     * @param $protocolId
     * @param $playersOnline
     * @param $playersMax
     */
    public function __construct($description, $protocolVersion, $protocolId, $playersOnline, $playersMax)
    {
        $this->description = $description;
        $this->protocolVersion = $protocolVersion;
        $this->protocolId = $protocolId;
        $this->playersOnline = $playersOnline;
        $this->playersMax = $playersMax;
    }

    /**
     * @return mixed
     */
    public function getDescription()
    {
        return $this->description;
    }

    /**
     * @return mixed
     */
    public function getProtocolVersion()
    {
        return $this->protocolVersion;
    }

    /**
     * @return mixed
     */
    public function getProtocolId()
    {
        return $this->protocolId;
    }

    /**
     * @return mixed
     */
    public function getPlayersOnline()
    {
        return $this->playersOnline;
    }

    /**
     * @return mixed
     */
    public function getPlayersMax()
    {
        return $this->playersMax;
    }

    public static function ping($host, $port, $timeout)
    {
        $stream = stream_socket_client("udp://" . $host . ":" . $port, $errno, $errstr, $timeout);
        if (!$stream) {
            throw new \Exception("Unable to create connection to " . $host . ":" . $port . ": " . $errstr);
        }
        stream_set_timeout($stream, $timeout);
        stream_set_blocking($stream, TRUE);
        
        $r1 = random_int(PHP_INT_MIN, PHP_INT_MAX);
        $r2 = random_int(PHP_INT_MIN, PHP_INT_MAX);
        $send = "\x01" . pack('J', $r1) . self::RAKNET_MAGIC . pack('J', $r2);
        stream_socket_sendto($stream, $send);
        
        $buf = stream_socket_recvfrom($stream, 2048);
        
        if (count($buf) < 1 || $buf[0] != "\x1c") {
            throw new \Exception("Unable to get a ping response.");
        }
        $ping_raw = substr($buf, strlen(self::RAKNET_MAGIC) + 19);
        $ping_parts = explode(';', $ping_raw);
        fclose($stream);
        
        return new McpePing($ping_parts[1], $ping_parts[3], $ping_parts[2], $ping_parts[4], $ping_parts[5]);
    }
}