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run code in 200+ php & hhvm versions
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<?php $time = new \DateTime('today'); $interval = new DateInterval("P3M"); return var_dump($time->add($interval));
based on BGoOu
Output for 5.4.30 - 5.4.45, 5.5.14 - 7.3.0
object(DateTime)#1 (3) { ["date"]=> string(26) "2016-03-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 5.3.20 - 5.4.29, 5.5.0 - 5.5.13
object(DateTime)#1 (3) { ["date"]=> string(19) "2016-03-01 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }