3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array( '' => 'foo', 'foo' => '', ); foreach($a as $k => $v) { var_dump(!empty($a[$k])); var_dump(isset($a[$k])); }
based on YOrPn
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(true) bool(true) bool(false) bool(true)