3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $var = false; print_r(var_dump(isset($var), true));
based on RcBlM
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(true) bool(true)