3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function factorial_of_a_number($n) { if($n ==0) { return 1; } else { return $n * factorial_of_a_number($n-1); } } print_r(factorial_of_a_number(3)); ?>
Output for 4.3.0 - 7.2.0
6