3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date1 = new \DateTime('2013-02-03 00:00:01'); $date2 = new \DateTime('2013-02-03 00:00:01'); $date3 = new \DateTime('2013-01-31 00:00:01'); //var_dump($date); $interval = new DateInterval('P1M'); $date1->add($interval); $date2->add($interval); $date3->add($interval); var_dump($date1); var_dump($date2); var_dump($date3);

preferences:
56.82 ms | 402 KiB | 5 Q