run code in 200+ php & hhvm versions
Bugs & Features
<?php $today = new DateTime(); $birthdate = new DateTime("1973-04-20"); $interval = $today->diff($birthdate); echo $interval->format('%y years');

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for Typed properties v2
40 years
Output for Lexical anon
40 years

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page