3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $minkExtension = true; $extensionManager = null; var_dump($minkExtension = $extensionManager); if (null !== $minkExtension = $extensionManager) { echo "COOLL"; }
based on KjOmF
Output for 4.3.0 - 7.2.0
NULL