It always seems to me that the PHP world is one step behind the current trends in the “enterprise world”. For example, Rails popularized the “ActiveRecord” pattern a few years ago. Ever since then, there has been an explosion of ActiveRecord implementations in PHP. Many even mistakenly refer to them as an “ORM”, but I won’t beat a dead horse here. ActiveRecord is great for your basic run-of-the-mill address book/cookbook/blog type of app, where it basically data driven, and there’s not much “business logic” to go around. For the majority of PHP applications out there, these tools are a god send.
As PHP matures, especially the object model, advanced developers have started to realize the limits of this pattern. Now the big rage is the DataMapper pattern, and DDD. We try to separate out the domain of application, and the holy grail is now transparent persistence. With great tools like Doctrine 2.0 and Object_Freezer, both of which are only possible with the new additions in PHP 5.3, these dreams are becoming a reality.
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