3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php //$foo = null; isset($foo) || $foo = 'default'; var_dump($foo);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(7) "default"