3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $mystring = null; if (empty($mystring)) { echo 'empty'; } if ($mystring == null) { echo 'null'; // and warning } if (!isset($mystring)) { echo 'not set'; }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
emptynullnot set