3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = 1; function recursion($x) { while ($x < 100) { recursion($x); } $x++; echo $x; }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0