[RFC] Nullable Types

As alluded to in an earlier email today[1] I am now moving the Nullable Types RFC[2] to the discussion phase. In a nutshell this RFC proposes syntax for declaring a type to alternatively be null. There is a decision that needs to be made: does the question mark go before or after the type name? function (?Foo $foo); function (Foo? $foo); There are precedents in several languages for each position. Some relevant issues to where the question mark goes are noted in the RFC[3]. I look forward to a helpful and meaningful discussion! [1]: http://news.php.net/php.internals/92252 [2]: https://wiki.php.net/rfc/nullable_types [3]: https://wiki.php.net/rfc/nullable_types#position_of