How to make structural links in php?

Question

PHP

Good afternoon, I'm sorry, I'm not in the backender, I'm making a website, well, as it's probably called spa, when there is one page, and then the content is loaded. I collect on php, without any frameworks and libraries. And now I have index.php, and then get requests go through the switch, page loading, respectively. But there is a nuance that I can't make a link structure like index.php/services/page.php. That is, either index.php/services or index.php/page.php.

Answer 1

https://www.taniarascia.com/the-simplest-php-router/