3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = "THEDLSDARNVNSCCVBXXMTGFRWSCVIYTVBVSDOPTRVBNMAITYSURFDMOTYYERSAWERTYMOITRUHDYRTBDIVNOWUNMBORNSTR"; for ($x=0 ; $x<strlen($str) ; ) { echo $str[$x - 1]; if ($x<2) { $x = $x + 1; } else { $x += $x; } }
Output for 7.1.0
RTHDAVVE
Output for 5.2.10 - 7.0.14
Notice: Uninitialized string offset: -1 in /in/EaveM on line 7 THDAVVE
Output for 4.3.0 - 5.2.9
Notice: Uninitialized string offset: -1 in /in/EaveM on line 7 THDAVVE