3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $test = ''; if (isset($test) && $test != NULL) { echo '$test set and not null'; } else if (isset($test)) { echo '$test set, even when null'; } else { echo '$test not set and not null'; } if($test == NULL) echo "\nBappa";
Output for 4.3.0 - 7.1.0
$test set, even when null Bappa