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Welcome back for another edition of Zend Framework Hidden Gems. Finally we start on the weird and wonderful world of database abstraction with PHP5, PDO and Zend.

One of the best introductions to Zend Framework was made by Rob Allen. Is a tutorial (now as 19 pages PDF document, continuously updated to latest Zend Framework versions, an translated to multiple languages) with a sample aplication for making an inventory system to display a CD collection. It shows mostly how to be used Model View Controller in Zend Framework.

One of the things we introduced in the new client is the “connection adapters”: The idea is that there is a different object in charge of performing the actual communication with the server. This “adapter” object can be replaced, and this way you get the same interface (the Zend_Http_Client interface), with a different method to connect to the server.