3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $somethingUseful = "and in case I don't see you again, goodafternoon, goodevening, and goodnight!"; $closureFunction = function($str = somethingUseful) use ($somethingUseful) { return $str; }; echo $closureFunction();
based on eOU6n
Output for 7.2.0
Warning: Use of undefined constant somethingUseful - assumed 'somethingUseful' (this will throw an Error in a future version of PHP) in /in/WS14J on line 5 somethingUseful
Output for 5.3.18 - 7.1.10
Notice: Use of undefined constant somethingUseful - assumed 'somethingUseful' in /in/WS14J on line 5 somethingUseful