3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function fun() { } $a = null; $fun = fun($a = 123); var_dump($a); var_dump($fun);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(123) NULL