3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function fact($n) { if ($n === 0) { // our base case return 1; } else { return $n * fact($n-1); // <--calling itself. } } echo fact(10);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
3628800