3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $date = new \DateTime('2010-12-01'); $a = (new \DateTime())->diff($date); var_dump($a->format('%y'));
based on EX6oR
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.6
string(1) "6"