3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a1 = array(1,3,5); //$a2 = array(); //echo array_key_exists(20, $a1); echo isset($a2); ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0