3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 'abc'; print $a[-1];
Output for 7.1.0
c
Output for 5.2.10 - 7.0.14
Notice: Uninitialized string offset: -1 in /in/MTis5 on line 5
Output for 4.3.0 - 5.2.9
Notice: Uninitialized string offset: -1 in /in/MTis5 on line 5