55 lines
1.5 KiB
PHP
55 lines
1.5 KiB
PHP
<?php
|
|
|
|
/**
|
|
* This file is part of the ramsey/uuid library
|
|
*
|
|
* For the full copyright and license information, please view the LICENSE
|
|
* file that was distributed with this source code.
|
|
*
|
|
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
|
|
* @license http://opensource.org/licenses/MIT MIT
|
|
*/
|
|
|
|
declare(strict_types=1);
|
|
|
|
namespace Ramsey\Uuid;
|
|
|
|
/**
|
|
* Provides binary math utilities
|
|
*/
|
|
class BinaryUtils
|
|
{
|
|
/**
|
|
* Applies the variant field to the 16-bit clock sequence
|
|
*
|
|
* @link https://www.rfc-editor.org/rfc/rfc9562#section-4.1 RFC 9562, 4.1. Variant Field
|
|
*
|
|
* @param int $clockSeq The 16-bit clock sequence value before the variant is applied
|
|
*
|
|
* @return int The 16-bit clock sequence multiplexed with the UUID variant
|
|
*
|
|
* @pure
|
|
*/
|
|
public static function applyVariant(int $clockSeq): int
|
|
{
|
|
return ($clockSeq & 0x3fff) | 0x8000;
|
|
}
|
|
|
|
/**
|
|
* Applies the version field to the 16-bit `time_hi_and_version` field
|
|
*
|
|
* @link https://www.rfc-editor.org/rfc/rfc9562#section-4.2 RFC 9562, 4.2. Version Field
|
|
*
|
|
* @param int $timeHi The value of the 16-bit `time_hi_and_version` field before the version is applied
|
|
* @param int $version The version to apply to the `time_hi` field
|
|
*
|
|
* @return int The 16-bit time_hi field of the timestamp multiplexed with the UUID version number
|
|
*
|
|
* @pure
|
|
*/
|
|
public static function applyVersion(int $timeHi, int $version): int
|
|
{
|
|
return ($timeHi & 0x0fff) | ($version << 12);
|
|
}
|
|
}
|