Loading PHP Pages Dynamically For On-page SEO

[AaronEsteban]

I am my second week into learning PHP & building database-driven dynamic websites.
I noticed that some database-driven websites seem to load their pages from the database
into the main "index.php" page. In terms of on-page SEO & link indexing, is this the best way
to load the pages on your site & get them indexed by Google, Yahoo, Bing, etc., or should I
create separate page files (e.g. Home.php, About.php, Contact.php, etc.) for each page of my
website? Whichever is best in terms of SEO, I am willing to try it. Thanks.


P.S.
Oh, & the website that I'm building is an eCommerce website for my fiance. Would like for
the users to be able to click on any product & then load the corresponding details page about
the product either on that index page or on a separate page. Thanks again! :-)