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Name	Size	Permission	Date
Command	[ DIR ]	drwxr-xr-x	2024-07-17 14:08
Factory	[ DIR ]	drwxr-xr-x	2024-07-17 14:08
AbstractUid.php	4.83 KB	-rw-r--r--	2024-05-31 05:49
BinaryUtil.php	5.89 KB	-rw-r--r--	2024-05-31 05:49
CHANGELOG.md	960 B	-rw-r--r--	2024-05-31 05:49
LICENSE	1.04 KB	-rw-r--r--	2024-05-31 05:49
MaxUlid.php	383 B	-rw-r--r--	2024-05-31 05:49
MaxUuid.php	415 B	-rw-r--r--	2024-05-31 05:49
NilUlid.php	383 B	-rw-r--r--	2024-05-31 05:49
NilUuid.php	472 B	-rw-r--r--	2024-05-31 05:49
README.md	604 B	-rw-r--r--	2024-05-31 05:49
TimeBasedUidInterface.php	519 B	-rw-r--r--	2024-05-31 05:49
Ulid.php	6.86 KB	-rw-r--r--	2024-05-31 05:49
Uuid.php	5.69 KB	-rw-r--r--	2024-05-31 05:49
UuidV1.php	2.03 KB	-rw-r--r--	2024-05-31 05:49
UuidV3.php	592 B	-rw-r--r--	2024-05-31 05:49
UuidV4.php	932 B	-rw-r--r--	2024-05-31 05:49
UuidV5.php	592 B	-rw-r--r--	2024-05-31 05:49
UuidV6.php	2.02 KB	-rw-r--r--	2024-05-31 05:49
UuidV7.php	5 KB	-rw-r--r--	2024-05-31 05:49
UuidV8.php	573 B	-rw-r--r--	2024-05-31 05:49
composer.json	922 B	-rw-r--r--	2024-05-31 05:49

Rename

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Uid;

/**
 * A v6 UUID is lexicographically sortable and contains a 60-bit timestamp and 62 extra unique bits.
 *
 * Unlike UUIDv1, this implementation of UUIDv6 doesn't leak the MAC address of the host.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 */
class UuidV6 extends Uuid implements TimeBasedUidInterface
{
    protected const TYPE = 6;

private static string $node;

public function __construct(?string $uuid = null)
    {
        if (null === $uuid) {
            $this->uid = static::generate();
        } else {
            parent::__construct($uuid, true);
        }
    }

public function getDateTime(): \DateTimeImmutable
    {
        return BinaryUtil::hexToDateTime('0'.substr($this->uid, 0, 8).substr($this->uid, 9, 4).substr($this->uid, 15, 3));
    }

public function getNode(): string
    {
        return substr($this->uid, 24);
    }

public static function generate(?\DateTimeInterface $time = null, ?Uuid $node = null): string
    {
        $uuidV1 = UuidV1::generate($time, $node);
        $uuid = substr($uuidV1, 15, 3).substr($uuidV1, 9, 4).$uuidV1[0].'-'.substr($uuidV1, 1, 4).'-6'.substr($uuidV1, 5, 3).substr($uuidV1, 18, 6);

if ($node) {
            return $uuid.substr($uuidV1, 24);
        }

// uuid_create() returns a stable "node" that can leak the MAC of the host, but
        // UUIDv6 prefers a truly random number here, let's XOR both to preserve the entropy

if (!isset(self::$node)) {
            $seed = [random_int(0, 0xFFFFFF), random_int(0, 0xFFFFFF)];
            $node = unpack('N2', hex2bin('00'.substr($uuidV1, 24, 6)).hex2bin('00'.substr($uuidV1, 30)));
            self::$node = sprintf('%06x%06x', ($seed[0] ^ $node[1]) | 0x010000, $seed[1] ^ $node[2]);
        }

return $uuid.self::$node;
    }
}