3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $test = ' '; $output = (int) $test ?: null; var_dump($output);
based on LqRgS
Output for 5.6.0 - 5.6.30, hhvm-3.18.4 - 3.21.0, 7.0.0 - 7.3.0beta1
NULL