PHP/MySQL or Node.JS/MongoDB?

For the past months I've been trying to learn as much HTML/CSS/JS as I could. I know it's fairly early but I'm thinking of jumping to back-end language + a database query language since I will have the whole summer to my self, thus I will be able to practice them all at once with multiple projects. I have programming experience (C#/Java/Python) so learning new languages isn't really hard now. I was wondering, which is better PHP/MySQL or Node.JS/MongoDB ? I see a lot of hate for PHP and a lot of hype for Node.JS lately, and even though I've tried out Node.JS for some bots, I somehow subconciously prefer PHP/MySQL as I find it more "formal" for some reason. What should I pick? I don't know how much I like JavaScript but I see PHP getting some hate for it's syntax too (mysqli or something). Thanks !