README

Version 7 UUIDs using a Unix timestamp for PHP

Installation

You can install the package via composer:

composer require ghostwriter/uuid

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Usage

Initialize a new Uuid instance with a given UUID string

use Ghostwriter\Uuid\Uuid;

$uuid = new Uuid('0000669c-8deb-7fe7-b9cc-692b216999a3');
// or
$uuid = Uuid::fromString('0000669c-8deb-7fe7-b9cc-692b216999a3');

echo $uuid->toString(); // 0000669c-8deb-7fe7-b9cc-692b216999a3

Generate a new UUID

echo Uuid::new()->toString(); // 0000669c-8f99-711e-9ed0-72a35c3b6fb3

Generate a new UUID with a specific timestamp

echo Uuid::new(new DateTimeImmutable())->toString(); // 0000669c-8faf-7e4b-9ed9-45c4c2b27f07

Compare and Sort UUIDs based on their timestamp ( 0: equal, 1: older, -1: newer)

$uuidLastYear = Uuid::new(new DateTimeImmutable('-1 year'));
$uuidLastMonth = Uuid::new(new DateTimeImmutable('-1 month'));
$uuidLastWeek = Uuid::new(new DateTimeImmutable('-1 week'));

// LastYear comparisons
// 0: LastYear is the same as LastYear
assert(0 === $uuidLastYear->compare($uuidLastYear));
// -1: LastMonth is newer than LastYear
assert(-1 === $uuidLastYear->compare($uuidLastMonth));
// -1: LastWeek is newer than LastYear
assert(-1 === $uuidLastYear->compare($uuidLastWeek));

// LastMonth comparisons
// 1: LastYear is older than LastMonth
assert(1 === $uuidLastMonth->compare($uuidLastYear));
// 0: LastMonth is the same as LastMonth
assert(0 === $uuidLastMonth->compare($uuidLastMonth));
// -1: LastWeek is newer than LastMonth
assert(-1 === $uuidLastMonth->compare($uuidLastWeek));

// LastWeek comparisons
// 1: LastYear is older than LastWeek
assert(1 === $uuidLastWeek->compare($uuidLastYear));
// 1: LastMonth is older than LastWeek
assert(1 === $uuidLastWeek->compare($uuidLastMonth));
// 0: LastWeek is the same as LastWeek
assert(0 === $uuidLastWeek->compare($uuidLastWeek));

/** @var array{0:UuidInterface,1:UuidInterface,2:UuidInterface,3:UuidInterface} $uuids */
$uuids = [$uuidLastWeek, $uuidLastYear, $uuidLastMonth];

usort($uuids, static fn (UuidInterface $left, UuidInterface $right): int => $left->compare($right));

// First: LastYear (oldest)
assert($uuidLastYear === $uuids[0]);
// Second: LastMonth
assert($uuidLastMonth === $uuids[1]);
// Third: LastWeek
assert($uuidLastWeek === $uuids[2]);

Credits

• Nathanael Esayeas
• All Contributors

Changelog

Please see CHANGELOG.md for more information on what has changed recently.

License

Please see LICENSE for more information on the license that applies to this project.

Security

Please see SECURITY.md for more information on security disclosure process.