PHP is great for marketing websites that don't need a lot of javascript.
But Node.js still wins for javascript heavy web apps. This is because you can write a js validator that will run on the client-side and server-side. Sometimes this is called Isomorphic JS (or Universal JS).
For example, this app[0] shows how to render React on the server and the client with shared props.
That being said, my personal website[1] still runs PHP and I'm glad I haven't taken on all the build dependencies of a modern web app just to host a simple blog.
Anyhow, I was recently fiddling with Elixir. Forget the hype and all that. If you like programming languages in general, I think you are going to enjoy this stuff for weekend projects.