Doctrine ORM - Object relational mapper for PHP

Object relational mapper (ORM) for PHP that sits on top of a powerful database abstraction layer (DBAL). One of its key features is the option to write database queries in a proprietary object oriented SQL dialect called Doctrine Query Language (DQL), inspired by Hibernates HQL. This provides developers with a powerful alternative to SQL that maintains flexibility without requiring unnecessary code duplication.

The Doctrine ORM aims to provide transparent object persistence for idiomatic, object-oriented PHP. It is very similar in nature and API to the Java Persistence API with a lot of PHP-specific features aiming at more simplicity and practicability for the PHP environment.