3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = new stdClass(); var_dump(is_null($a->a));
Output for 5.2.6 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Undefined property: stdClass::$a in /in/oRlWX on line 3 bool(true)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.2.5
Notice: Undefined property: stdClass::$a in /in/oRlWX on line 3 bool(true)
Output for 4.3.0 - 4.4.9
Notice: Undefined property: a in /in/oRlWX on line 3 bool(true)