3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php if(isset($a)) { $b = "test"; } echo $b;
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: b in /in/cRVfO on line 6
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: b in /in/cRVfO on line 6