3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = "foo"; var_dump($a[-1]); echo $a[32];
based on RNGGj
Output for 7.1.0
string(1) "o" Notice: Uninitialized string offset: 32 in /in/9FLeU on line 4
Output for 5.2.10 - 7.0.14
Notice: Uninitialized string offset: -1 in /in/9FLeU on line 3 string(0) "" Notice: Uninitialized string offset: 32 in /in/9FLeU on line 4
Output for 4.3.0 - 5.2.9
Notice: Uninitialized string offset: -1 in /in/9FLeU on line 3 string(0) "" Notice: Uninitialized string offset: 32 in /in/9FLeU on line 4