3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array('1','3'); echo count($a); $c = count($a); echo $a[$c];
based on rkh6X
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
2 Notice: Undefined offset: 2 in /in/Qg9eg on line 5
Output for hhvm-3.10.0 - 3.13.2
2 Notice: Undefined index: 2 in /in/Qg9eg on line 5
Output for 4.3.0 - 5.2.17
2 Notice: Undefined offset: 2 in /in/Qg9eg on line 5