3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo($a, $b = 3) { var_dump($a + $b); } foo(1, 2, 4, 8, 16);
based on SOLvg
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0beta1
int(3)