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