How do you make a single point of entry on the site?

Question

PHP

I'm trying to make a single entry point on the site, but it doesn't work, everything works crookedly. When a file is included in index.php, links to css and img are not correctly displayed on the loaded page, which for some reason change their address depending on the url. I don't understand what's wrong with me. Maybe someone will throw off the scripts for splitting the url into parts and following it from their projects. And a .htaccess file wouldn't hurt either. So that I know if I'm doing everything right. And how do others implement the entry point. There are almost no scripts on the Internet.

Answer 1

which for some reason change their address depending on the url. I don't understand what's wrong with me.

Everything is like that with you.
There are two solutions
1. Specify paths to statics from the root of the web server:

<link href="/design/css/main.css">
<img src="/design/images/logo.png">

2. Use a tag<base>

<base href="http://my-super-site.ru/">
<link href="design/css/main.css">
<img src="design/images/logo.png">

Answer 2

You should start with the fundamentals - filesystem paths, the MVC pattern, and the front controller.

Answer 3

Use symfony luke.