3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo $a[array()];
Output for 5.0.4 - 7.1.7
Notice: Undefined variable: a in /in/TB7QB on line 3
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: a in /in/TB7QB on line 3