3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function increment(&$val) { return $val++; } $a = 1; echo increment($a); echo increment($a);
based on bI8FR
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.0 - 7.3.0beta1
12