Doctrine

We are using Doctrine for both MySQL and MongoDB. The most important libraries are:

Name	Library	Description
Doctrine ORM	doctrine/orm	The Doctrine ORM is an Object-Relational Mapping library for PHP. It provides a way to map objects to database tables and vice versa.
Doctrine Migrations	doctrine/migrations	The Doctrine Migrations library provides tools for database schema migrations.
Doctrine MongoDB ODM	doctrine/mongodb-odm	The Doctrine MongoDB ODM is an Object-Document Mapping library for PHP. It provides a way to map objects to MongoDB documents and vice versa.
Doctrine MongoDB ODM Bundle	doctrine/mongodb-odm-bundle	The Doctrine MongoDB ODM Bundle integrates the Doctrine MongoDB ODM library with Symfony.