There is an initial version of YII based C++ web framework. Applications that written on it you are able to run under Apache, NGINX as FCGI application. The API of the engine very very similar to the YII 1.x. So, if you have good knowledge of YII and knowledge of C++, so you are welcome. If you are interested of development of this projects, so please write email to changeyourmind7654321@gmail.com.
I don’t know if it’s possible to make some kind of interpreter like HHVM to use a normal Yii PHP code but to compile it into a binary c++ code.
You would use the current Yii tools but make a website insanely fast if you could pull it off. 
It would help you and us at the same time
Thanks for advice. Really helpful tool "Zephir". The framework as C extension is good. How do you think when developers start coding applications on Zephir? Have they already started?
I don’t know and I don’t really think it’s that helpful for the app level. Rewriting some slow core parts of the undelying framework — definitely. The con is that debugging compiled code isn’t as easy as doing step by step debug w/ XDebug.
This is my primary qualm with compiled web development. If the debugging isn’t as easy as a step-through-see-through which tools like XDebug gives, there’s a visible overhead on development time.