On the Zend Developer Zone there's a new post sharing the latest episode of their ZendCon 2010 sessions series - a talk from Stefan Priebsch about object persistence in PHP.

The object-relational impedance mismatch makes persisting PHP objects in a relational database a daunting task. How about these new schemaless NoSQL databases? We will have a look at the problems involved with persisting PHP objects, and introduce design patterns that help solving these problems. Putting the patterns to good use, we will build a working PHP object persistence solution for MongoDB.

You can download the episode as an mp3 and follow along with the slides for a more complete picture.