Weekly roundup: preparing for PHP Barcelona

I'm preparing for the PHP Barcelona Conference 2010, which will take place on October 29th and 30th. If you are reading this blog and are attending the conference, it will be nice to meet you there.
My talk is titled Architecture and testability and was originally given in Italian at phpDay 2010. It will take place on October 29th, at 16:30 in the assertTrue room.

Here are my articles for this week on Web Builder Zone. We have ended the series on PHP patterns and started a new one, dedicated to the pattern we use every day in testing. Test code has the same, if not greater, dignity of the production code it exercises.
Practical PHP Patterns: Record Set
The must-know of color theory
Practical PHP Testing Patterns: Recorded Test
The unknown acronym: GRASP