42 lines
1.0 KiB
PHP
42 lines
1.0 KiB
PHP
<?php
|
|
|
|
namespace Ramsey\Uuid;
|
|
|
|
/**
|
|
* Provides binary math utilities
|
|
*/
|
|
class BinaryUtils
|
|
{
|
|
/**
|
|
* Applies the RFC 4122 variant field to the `clock_seq_hi_and_reserved` field
|
|
*
|
|
* @param $clockSeqHi
|
|
* @return int The high field of the clock sequence multiplexed with the variant
|
|
* @link http://tools.ietf.org/html/rfc4122#section-4.1.1
|
|
*/
|
|
public static function applyVariant($clockSeqHi)
|
|
{
|
|
// Set the variant to RFC 4122
|
|
$clockSeqHi = $clockSeqHi & 0x3f;
|
|
$clockSeqHi |= 0x80;
|
|
|
|
return $clockSeqHi;
|
|
}
|
|
|
|
/**
|
|
* Applies the RFC 4122 version number to the `time_hi_and_version` field
|
|
*
|
|
* @param string $timeHi
|
|
* @param integer $version
|
|
* @return int The high field of the timestamp multiplexed with the version number
|
|
* @link http://tools.ietf.org/html/rfc4122#section-4.1.3
|
|
*/
|
|
public static function applyVersion($timeHi, $version)
|
|
{
|
|
$timeHi = hexdec($timeHi) & 0x0fff;
|
|
$timeHi |= $version << 12;
|
|
|
|
return $timeHi;
|
|
}
|
|
}
|