Version 4: Random¶
Version 4 UUIDs are perhaps the most popular form of UUID. They are randomly-generated and do not contain any information about the time they are created or the machine that generated them. If you don’t care about this information, then a version 4 UUID might be perfect for your needs.
use Ramsey\Uuid\Uuid; $uuid = Uuid::uuid4(); printf( "UUID: %s\nVersion: %d\n", $uuid->toString(), $uuid->getFields()->getVersion() );
This will generate a version 4 UUID and print out its string representation. It will look something like this:
UUID: 1ee9aa1b-6510-4105-92b9-7171bb2f3089 Version: 4
Version 4 UUIDs generated in ramsey/uuid are instances of UuidV4. Check out
Ramsey\Uuid\Rfc4122\UuidV4 API documentation to learn
more about what you can do with a UuidV4 instance.