Serve multiple pages from 1 PHP file?

Question

So basically i am struggling with the need of optimizing my code for some project of mine. Currently i have pages like add_company.php, view_company.php

Answer 1

You could use POST instead of GET with index.php:

This would hide the action type from the user, acting as though it is a single page. However, it may require using a form in your navigation as opposed to linking direct to "company.php?action=edit".