3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php print_r(array_filter(array('', 'a', null, 'c')));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [1] => a [3] => c )