I wanna turn PHP dynamic URLs into static URLs. For example, I want URLs like
http://www.example.com/book.php?title=twilight to become http://www.example.com/book/twilight
and http://www.example.com/writer.php?name=meyers to become http://www.example.com/writer/meyers
When it's done, will my form validation on the site change?
My URL rewriting needs might not be much too complicated.
I'm developing it locally using XAMPP, Apache and MySql. Later I'll put it online.
How do I do that? Is this kind of URL rewriting technique the most adviced for SEO?
Yep. U need to use mod_rewrite. Also do a search for .ht_access files. You can put your rewrite directives in .ht_access files and drop them in to whatever directory on your server where you want them to take effect.
For the type of rewrite you want this rule generator should be of use to you:
http://www.generateit.net/mod-rewrite/
And yes the URL you're trying to achieve is seo friendly.