3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function rec($a) { if ($a >= 2) return ($a * rec($a-1)); return $a; } echo rec(125);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
1.8826771768889E+209