What php framework could Vue compatible with

It's a javascript framework. It gets data using AJAX from anything on the server that sends HTTP responses.

Since it's javascript, it has nothing to do directly with php. Its a frontend technology, that communicates with a backend technology, which could be php, rails, or anything else. Just like jQuery has nothing to do with php, but it can communicate with php via ajax.

I am new with vue to use vue do I need to download anything?

Since the vue link :

   <script src="http://cdnjs.cloudflare.com/ajax/libs/vue/1.0.1/vue.min.js"></script>

So I basically just have to have internet connection, right?