3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $s = "Sticky_Sticky_Sticky_Sticky_Sticky"; $r = array_unique(explode("_", $r)); foreach($r as $q) { echo $q . '\r\n'; } ?>
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: r in /in/J61sm on line 3 \r\n
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: r in /in/J61sm on line 3 \r\n