Hello, Consider this: public function foo(MyClass $o)
If you allow null, false, or anything else, you must CHECK it before using it or you will get a "calling a method on a non-object" first. The whole point of having a type hint, from my point of view, is so the majority of time I DO NOT have to check the incoming parameter before using it. If nulls or false's are allowed, without explicitly saying they are, such as function foo(nullable MyClass $o), then I'll have to either do an is_null() or instanceof check on each parameter. I'm all for it if we have an option added to the function syntax such as nullable, but otherwise, it's usefulness is minimized. -- Best regards, Jason mailto:[EMAIL PROTECTED] -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php