3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $var = null; var_dump(empty( $var )); var_dump( isset( $var ) && $var == NULL );
Output for 5.3.7 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
bool(true) bool(false)
Output for hhvm-3.10.0

Process exited with code 153.