Why do I bring up containers? Because part of why PHP was so dope in this way was the way you can just define 1 file per endpoint and drop it in public_html, and have no server setup to do. Running say, Rails or ASP.NET or a Java site back then meant doing… a lot more, to your server.
But with Docker, you can just steal a good Dockerfile template from someone else, and it’s just like 3-4 simple files for you to manage for a simple Sinatra (Ruby) or node.js version of the “one-off PHP file” things.
edit: Granted, I agree that if you want to do all sorts of things on the internet, maybe PHP is not the right choice. But for simple, dynamic web things that I want to just make and then run like this forever, that I can work on but don't have to? PHP and vanilla HTML and Javascript are where it's at for me, hands down. Everything else I know is either too new or seems to have constant churn or issues. That you hear nothing about PHP other than complaining it's "outdated" or whatever from the outside -- always "why are you using this?" never "why oh why am I using this?" -- is because it just hums along, IMO. I like it better than Python, and I kinda view it as in that class.
Unfortunately newer versions of PHP killed it and it's dead now, and even more unfortunately while PHP absorbed a lot of features from Hack, native XML was not one of them. There was even going to be a Hack version of the Composer package manager but that never got finished AFAIK. Distros stopped supporting it. I think I still have my half-finished attempt at a Hacker News fork in Hack sitting around on a hard drive somewhere. I can't even find an environment to run it in anymore.