Doctrine

A library written in PHP in 2006, which introduces an object relation mapper (ORM), which allows you to work with the database in an object-oriented way. One of the key features is ORM (both SQL and noSQL) and the ability to write database queries in Doctrine Query Language (DQL), a dialect of SQL. It is the basic ORM in the Symfony framework, but also allows integration with other frameworks, e.g. with Laravel and Zend Framework.