Online PHP editor | refs for TASAL

<?php $birthDate = new DateTime(null); $birthDateNotNull = new DateTime('1989-09-26'); $birthDate1 = new DateTime(null); $birthDateNotNull1 = new DateTime('2015-12-07 20:40:25'); echo serialize($birthDate); echo PHP_EOL; echo serialize($birthDateNotNull); echo PHP_EOL; echo PHP_EOL; echo PHP_EOL; echo serialize($birthDate1); echo PHP_EOL; echo serialize($birthDateNotNull1);