3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array('a' => null); print '=========\n'; print_r(isset($a['a'])); print '=========]n'; print_r(array_key_exists('a', $a)); print '=========\n';
Output for 4.3.0 - 7.2.0
=========\n=========]n1=========\n