How to do URL re-writing in PHP?

Question

I am trying to implement URL rewriting in my PHP application. Can someone share a step by step procedure of implementing URL rewriting in PHP and MySQL?

In my applic

Answer 1

After reading comments and question once again, I've realized that my previous answer is not completely the thing your are looking for. So here some additions, if you want rewrite/redirect/proxy the URL addresses so for example then user types www.f1.com he will actually see www.f2.com, but domain will remain the same, you probably need to setup a reverse proxy using Apache for that. It act's similar to mod_rewrite.

Regarding the second part, since modern crawler also performing the URL link analyses I think your first option is better performance wise.

Previous answer:
And using PHP you can achieve redirection like:

From php.net. Here more examples.