3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 'vskutku?'; echo (!isset($a['foo']) || empty($a['foo'])) ? 'true ' : 'false'; echo empty($a['foo']) ? 'true ' : 'false';
Output for 5.0.0 - 5.0.2, 5.4.0 - 7.2.6
true true
Output for 4.3.0 - 4.4.9, 5.0.3 - 5.3.29
falsefalse