As Paul Jones has announced in this post to his site the PECL "Request" extension has reached the beta stage with the release of beta v1.

I am happy to announce that the PECL extension for server-side request and response objects has reached beta status! (Documentation here.)

[...] This completes the intended initial functionality of the extension. You should install it and try it out, because it might be make your work easier.

The post also lists out some of the new functionality introduced in this beta mostly focused around the fetching of the "forwarded for" information. You can find out more about the extension on the pecl.php.net website.