Very like you have heard of Doctrine,http://www.doctrine-project.org
It is an excellent ORM written in PHP. It made the developers' life much easy when its about writing codes for models,CRUD,export, import to db.
PHP-PAPA is released in 1.2 version which includes doctrine as its library. You can now use doctrine in your papa apps :)
More including the 'how to' can be found here:
phppapa.com/community/index.php?top
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