use Symfony\Component\Uid\Uuid;use Symfony\Component\Uid\Ulid;// generating a random UUID type 4 (all UUID types are supported)$uuid = Uuid::v4();// generating a UUID Type 6 (which is not part of the standard, but it's// supported by the component because it's popular enough)$uuid = Uuid::v6();// generating a ULID (there's only one type of them)$ulid = new Ulid();
// checking if some UUID is nulluse Symfony\Component\Uid\NilUuid;if ($uuid instanceof NilUuid) { // ...}// comparing UUIDs$uuid1 = Uuid::v1();$uuid4 = Uuid::v4();$uuid1->equals($uuid4); // false// converting to different formats$ulid = Ulid::fromString('01E439TP9XJZ9RPFH3T1PYBCR8');$ulid->toBinary(); // string(16) "..." (binary contents can't be printed)$ulid->toBase32(); // string(26) "01E439TP9XJZ9RPFH3T1PYBCR8"$ulid->toBase58(); // string(22) "1BKocMc5BnrVcuq2ti4Eqm"$ulid->toRfc4122(); // string(36) "0171069d-593d-97d3-8b3e-23d06de5b308"