3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = array(1,2,3,4,5,6,7,8,9); function walk($a, $index = 9){ if (0 == $index -1) { echo($a[$index]); } else { echo($a[$index]); walk($a, $index -1); } } walk($array);
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined offset: 9 in /in/kinUf on line 8 98765432
Output for hhvm-3.12.0
Notice: Undefined index: 9 in /in/kinUf on line 8 98765432
Output for hhvm-3.10.0
Notice: Undefined index: 9 in /in/kinUf on line -1 98765432
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 9 in /in/kinUf on line 8 98765432