So you?ve just written the coolest new PHP script ever. You?re totally excited to go live and see if this puppy really works, and when you do, it works, kinda. Functionally your script is perfect, but nobody sees it since it was never listed in google.
Dan Zarrella's new article is an overview of the major issues encountered when trying to make PHP scripts rank well. It covers PHP execution time, URL cleanliness (with a hack to mask php pages with get vars as static html pages without mod_rewrite), and disabling the dreaded trans_sid.
The article can be read at:
http://www.stargeek.com/php-seo.php