1<?php 2 3/** 4 * This file is part of the ramsey/uuid library 5 * 6 * For the full copyright and license information, please view the LICENSE 7 * file that was distributed with this source code. 8 * 9 * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> 10 * @license http://opensource.org/licenses/MIT MIT 11 */ 12 13declare(strict_types=1); 14 15namespace Ramsey\Uuid\Guid; 16 17use Ramsey\Uuid\Codec\CodecInterface; 18use Ramsey\Uuid\Converter\NumberConverterInterface; 19use Ramsey\Uuid\Converter\TimeConverterInterface; 20use Ramsey\Uuid\Uuid; 21 22/** 23 * Guid represents a UUID with "native" (little-endian) byte order 24 * 25 * From Wikipedia: 26 * 27 * > The first three fields are unsigned 32- and 16-bit integers and are subject 28 * > to swapping, while the last two fields consist of uninterpreted bytes, not 29 * > subject to swapping. This byte swapping applies even for versions 3, 4, and 30 * > 5, where the canonical fields do not correspond to the content of the UUID. 31 * 32 * The first three fields of a GUID are encoded in little-endian byte order, 33 * while the last three fields are in network (big-endian) byte order. This is 34 * according to the history of the Microsoft definition of a GUID. 35 * 36 * According to the .NET Guid.ToByteArray method documentation: 37 * 38 * > Note that the order of bytes in the returned byte array is different from 39 * > the string representation of a Guid value. The order of the beginning 40 * > four-byte group and the next two two-byte groups is reversed, whereas the 41 * > order of the last two-byte group and the closing six-byte group is the 42 * > same. 43 * 44 * @link https://en.wikipedia.org/wiki/Universally_unique_identifier#Variants UUID Variants on Wikipedia 45 * @link https://docs.microsoft.com/en-us/windows/win32/api/guiddef/ns-guiddef-guid Windows GUID structure 46 * @link https://docs.microsoft.com/en-us/dotnet/api/system.guid .NET Guid Struct 47 * @link https://docs.microsoft.com/en-us/dotnet/api/system.guid.tobytearray .NET Guid.ToByteArray Method 48 * 49 * @psalm-immutable 50 */ 51final class Guid extends Uuid 52{ 53 public function __construct( 54 Fields $fields, 55 NumberConverterInterface $numberConverter, 56 CodecInterface $codec, 57 TimeConverterInterface $timeConverter 58 ) { 59 parent::__construct($fields, $numberConverter, $codec, $timeConverter); 60 } 61} 62