3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = 1; if (isset($z)) echo 'not set';
based on m01S1
Output for 4.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0RC5