3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php isset($a[3]); isset($a); echo $a;
based on ZeDf2
Output for 5.0.4 - 7.2.0
Notice: Undefined variable: a in /in/td9ir on line 5
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: a in /in/td9ir on line 5