Hello internals. I'm firmly against removing the "function" keyword. PHP is a dynamic language, that means that even using the latest most functional IDE's out there, finding the implementation is not always few clicks away (PhpStorm's "Find Usages") and you need to do a search in the project. And the only thing, that makes it fast and easy, is the "function" keyword, because you can do a search by "function nameISearchFor" and get a single hit.
I'm not even mentioning the code readability...
