3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $arr = []; $arr[123] = "something"; echo count($arr);
based on pXAB9
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.0 - 7.3.0beta1
1