3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = ''; echo !$a ? 'Ywes' : 'no';
based on R4rHm
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0beta1
Ywes