Php class to fetch snowflakes from JSnowflake (https://github.com/MisterFixx/JSnowflake)

Snowflake.php

<?php
/**
 * Snowflake.php
 *
 * Licensed under The MIT License
 * @author    Mister_Fix <me@misterfix.io>
 * @package   Snowflake
 * @version   v 2.0
 * @license   MIT License
 *
 * NOTE: This will only work properly on 64 bit versions of PHP, because Snowflakes are 64 bit integers.
 */

class Snowflake{
    /**
    * Last fetched snowflake
    */
    private $lastSnowflake = 0;
    /**
    * If a socket has already been opened, it will be stored here so we don't have to open another one wasting time.
    */
    private $socket = null;
    /**
    * The data to write to the socket each time a Snowflake is needed
    */
    private $socketData = null;
    /**
    * The lenth of the data aforementioned data
    */
    private $dataLength = 0;
    
    /**
    * Initiate a connection to the Snowflake server
    */
    public function __construct($host = 'localhost:9098'){
        $this->socket     = stream_socket_client("tcp://{$host}"); 
        $this->socketData = pack('N*', 1);
        $this->dataLength = strlen($this->socketData);        
        return $this;
    }

    /**
    * Fetches a single snowflake
    * @param string (Optional Snowflake server address)
    * @return int (The Snowflake)
    */
    public function nextId():int{
        if ($this->socket != false) {
            fwrite($this->socket, $this->socketData, $this->dataLength);
            $this->lastSnowflake = unpack("J", fread($this->socket, 8))[1];
            return $this->lastSnowflake;
        }
        else {
            throw new RuntimeException('Unable to connect to Snowflake service');
        }
    }

    /**
    * Returns the last generated snowflake
    * @return int The last returned Snowflake
    */
    public function getLastId():int{
        return $this->lastSnowflake;
    }

    /**
    * Returns the creation timestamp of a given snowflake
    * @param int Snowflake
    * @param int (Optional) epoch of the snowflake
    * @return int java timestamp of Snowflake's creation time
    * To convert to php timestamp divide by 1000
    */
    public function getIdCreationTime($snowflake, $epoch = 1436077819000):int{
        return ($snowflake >> 22)+$epoch;
    }

    /**
    * Returns the datacenter ID at which the given snowflake was generated.
    * @param int Snowflake
    * @return int Snowflake's Datacenter ID
    */
    public function getDatacenterId($snowflake):int{
        return $snowflake >> 17 & 31;
    }

    /**
    * Returns the instance ID at which the given snowflake was generated.
    * @param int Snowflake
    * @return int Snowflake's Instance ID
    */
    public function getInstanceId($snowflake):int{
        return $snowflake >> 12 & 31;
    }

    /**
    * Returns the sequential number of the given snowflake.
    * @param int Snowflake
    * @return int Snowflake's Sequential number
    */
    public function getSequentialNumber($snowflake):int{
        return $snowflake >> 0 & 4095;
    }
}


//Example & Benchmark
$snowflake = new Snowflake();
$time_start = microtime(true);
for($i = 0; $i < 10000; $i++){
    $snowflake->nextId();
}
$time_stop = microtime(true);

$id = $snowflake->nextId();

echo "Snowflake: ".$id."<br /><br />";
echo "Created at: ".gmdate("Y-m-d H:i:s", $snowflake->getIdCreationTime($id)/1000)."<br />";
echo "Datacenter ID: ".$snowflake->getDatacenterId($id)."<br />";
echo "Instance ID: ".$snowflake->getInstanceId($id)."<br />";
echo "Sequential Number: ".$snowflake->getSequentialNumber($id)."<br /><br />";
echo "Time to get 10k Snowflakes: ".($time_stop-$time_start)." seconds<br />";