Feature proposal: userland support for name qualification

Hello php.internals, Here is a (hopefully) simple language feature I'd like to suggest: Now that PHP has support for namespaces and therefore makes it possible to refer to classes, functions and constants by their shorter unqualified aliases, it would be useful to extend this functionality to string references to these classes/functions/constants as well. Perhaps it wouldn't be as useful for constants, but class and function names need to be used as string literals from time to time, so given that a statement like "use Foo\Bar\Baz" is present, having a special syntax for retrieving the fully qualified name as a string, like Baz::__CLASS__, qualify(Baz) or use(Baz) would save numerous keystrokes, eliminate possible typos and make refactoring (renaming) easier. The use cases that come to my mind are class names in exception messages, in DI container setup code, also things like Doctrine's $entityManager->getRepository('Application\Entities\Message') and callable function name strings. Of course, if it's actually problematic to implement this, that's fine, just let me know. Thanks.