3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $aud = 22; if ($audgh) { echo 'its empty'; } else { echo 'value found'; }
based on IoL6v
Output for 5.6.0 - 7.3.0beta1
Notice: Undefined variable: audgh in /in/dI44a on line 5 value found