Hey,
This is my first RFC so give me a little leeway if I get things wrong.
https://wiki.php.net/rfc/arrayof
The implementation has been written by Joe Watkins, and I will be
handling the RFC process for him.
It is aimed at PHP 5.6, and so far the release managers seem to be ok
with the idea of this potentially being merged after the alpha
release, so this should not be considered an issue.
Everything is open for discussion, especially the current error
messages. They are not perfect, so let us know if you have better
ideas.