3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function fibo_r($n){ return(($n < 2) ? 1 : fibo_r($n - 2) + fibo_r($n - 1)); } fibo_r(4);
based on 3pdua
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0