3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array( null, 0, false, '' ); foreach ($arr as $key => $v) { echo isset($arr[$key]), "\n"; }
based on sIVcq
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
1 1 1