3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a; echo is_null($a);
Output for 5.1.0 - 7.1.0
Notice: Undefined variable: a in /in/NolZY on line 3 1
Output for 5.0.4 - 5.0.5
Notice: Undefined variable: a in /in/NolZY on line 2 Notice: Undefined variable: a in /in/NolZY on line 3 1
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: a in /in/NolZY on line 2 Notice: Undefined variable: a in /in/NolZY on line 3 1