3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $minkExtension = ''; $extensionManager = ''; var_dump($minkExtension = $extensionManager); if (null !== $minkExtension = $extensionManager) { echo "COOLL"; }
based on 1LA3t
Output for 4.3.0 - 7.2.0
string(0) "" COOLL