Ahahaha I legitimately cannot tell if this is a sarcastic blog post. To me it just sounds like such a joke. It's quite confusing.
I hope it's a joke...
I hope it's a joke...
So, although I wouldn't really chose tools author choses here, so the "not-really-a-joke joke" is still largely opinionated, I have to admit that assuming AJAX and some kind of MVC-ish framework (even if it's a one of your own) on both back-end and front-end is pretty much a must for a typical PHP web-application.
"That’s it, we can run it now. “Hello, world!” is displayed on the screen. It looks almost like the result of <?php echo «hello, world» ?>"