[midrus]

Django: Great if you are building only a backend or rest API with a separate frontend (an SPA in React, etc). The templates system is terrible, has no asset pipeline built in and frontend on it feels like developing in the 90s. You'll miss php a lot here.

Elixir: Technologically "mind blowing", although all the nice things come from the Erlang VM and not from Elixir itself in my opinion. You will likely not find any job using Elixir, if you do it is going to be full of people just learning the language so the codebase will be very likely a disaster. You will miss a lot of libraries and you will have to write code for things you'd take for given in the PHP ecosystem. Be ready to fight your editor plugins (depending on which one you use, and the degree of IDEisms you're used to).

I understand you want to learn something new, so the most "radical" one here that will teach you more new things is clearly Elixir.

But other than learning purposes, If I were to build something for real, I'd stick with PHP and Laravel, it's an incredible productive, well documented and well thought out platform to develop in.