Online PHP editor | refs for tG4fN

<?php var_dump((new DateTime('@123'))->format('U') === '123'); var_dump((new DateTimeImmutable('@123'))->format('U') === '123'); var_dump((new DateTime('@123.456789'))->format('U.u') === '123.456789'); var_dump((new DateTimeImmutable('@123.456789'))->format('U.u') === '123.456789');