How to split URL into controller and actions?

Question

PHP

There are three types of pages on the site: "page", "product catalog", "product" (templates).
Therefore, there are three controllers: PageController, CatalogController, ProductController.
When it hits the /about/ page, the PageController fires.
But how and where can I pass the about variable itself? It's stupid to make an action for it, as there are quite a few pages. Action there index is used.
The question about /catalog/auto/, /product/bmw/ is similar.
Question in general, what does about, auto, bmw mean for mvc?

Answer 1

Yes, it doesn't make any difference. It all depends on how you process the request.
It all depends on the specific situation.