Marco Tabini has this new post on his blog today with a "roundup" of the slides from as many of the php|tropics conference presenters as possible:

As promised to all the attendees, here are as many slide sets as possible from php|tropics. I'm still missing a few sets, and will be uploading them when they become available.

• Jason Sweat: Design Patterns and Test-driven Development.
• John Coggeshall: Smarty
• Lukas Smith: PEAR I and II, Database Abstraction and LiveUser.
• Derick Rethans: Xdebug, Encryption and MySQL Clustering. Derick has also posted his photos of the event here.
• Dan Scott: Db2/Cloudscape/Derby and Inside the PHP Documentation.
• Marcus Boerger: Implementing OOP PHP 5 Extensions (code) and From Engine Overloading to SPF (debug session I and debug session II).
• Andrei Zmievski: Andrei's Regex Clinic and Say Hello to PHP-GTK2
• Ilia Alshanetsky: Starting PHP and Performance Management.
• Wez Furlong: PHP Data Objects and PHP Streams (Lucky Dip)