eko54r
b5e3a778ce
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37 lines
932 B
PHP
37 lines
932 B
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Uid;
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/**
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* A v4 UUID contains a 122-bit random number.
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*
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* @author Grégoire Pineau <lyrixx@lyrixx.info>
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*/
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class UuidV4 extends Uuid
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{
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protected const TYPE = 4;
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public function __construct(?string $uuid = null)
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{
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if (null === $uuid) {
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$uuid = random_bytes(16);
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$uuid[6] = $uuid[6] & "\x0F" | "\x40";
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$uuid[8] = $uuid[8] & "\x3F" | "\x80";
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$uuid = bin2hex($uuid);
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$this->uid = substr($uuid, 0, 8).'-'.substr($uuid, 8, 4).'-'.substr($uuid, 12, 4).'-'.substr($uuid, 16, 4).'-'.substr($uuid, 20, 12);
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} else {
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parent::__construct($uuid, true);
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}
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}
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}
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