[frik]

I run HHVM on a website. I started in June (back then you had to write your config file from scratch and some API functions were missing). I refactored my code to PDO (mysqli was missing back then). It worked fine from the beginning, and the uptime and overall performance is really great.

I use Nginx as frontend and direct all dynamic request to HHVM's own webserver (https://github.com/facebook/hhvm/wiki/Using-nginx-as-Front-S... )

Keep in mind, Facebook runs on HHVM too, so it's rock solid.

Btw. the devs are very helpful on the official irc channel!