3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = ""; if ($a[0] !== '/') { echo "set"; } else { echo "let go"; }
Output for 5.2.10 - 5.6.28, 7.0.0 - 7.1.0
Notice: Uninitialized string offset: 0 in /in/nCWMk on line 3 set
Output for hhvm-3.10.0 - 3.12.0
set
Output for 4.3.0 - 5.2.9
Notice: Uninitialized string offset: 0 in /in/nCWMk on line 3 set