O documento apresenta o ORM Doctrine para PHP, descrevendo suas principais características como mapeamento objeto-relacional, tarefas via linha de comando, caching, linguagem de consulta DQL e relacionamentos entre objetos.
27. Quero ver exemplo! FROM BlogPost p INNER JOIN p.Author a LEFT JOIN p.Tags t SELECT b.id AS b__id, b.title AS b__title, b.body AS b__body, b.author_id AS b__author_id, b.slug AS b__slug, b.created_at AS b__created_at, b.updated_at AS b__updated_at, a.id AS a__id, a.name AS a__name, t.id AS t__id, t.name AS t__name FROM blog_post b INNER JOIN author a ON b.author_id = a.id LEFT JOIN blog_post_tag b2 ON b.id = b2.blog_post_id LEFT JOIN tag t ON t.id = b2.tag_id