Doctrine2 consists of two libraries: the Database Abstraction Layer (DBAL) and the Object Relational Mapper (ORM). The DBAL provides a PDO-like layer with additional features for schema manipulation. The ORM allows normal PHP objects to be persisted as database rows and vice versa by mapping object properties to table columns via annotations. The document provides examples of executing queries, retrieving schema information, altering schemas, persisting objects, and retrieving persisted objects using Doctrine2.

1. Iostudio Developer Lunch
Doctrine2 in 10 Minutes
Sep 8th, 2010
Ryan Weaver
@weaverryan
www.iostudio.com

2. Iostudio Developer Lunch
What is Doctrine2?
Doctrine2 consists of two distinct libraries:
1) DBAL (Database Abstraction Layer)
2) ORM (Object Relational Mapper)
You can use just the DBAL or both the
DBAL & ORM

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Database Abstraction Layer (DBAL)
“A lightweight runtime layer around a PDO-like API
with a lot of additional, horizontal features like
database schema introspection and manipulation
through an OO API.”
Like PDO, but driver independent and with more
extra features

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Executing Queries

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Schema Information

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Altering schemas

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Object Relational Mapper (ORM)
● Takes a normal PHP object and persists its
properties as a row in a table
● Takes a row in a table and maps the values to the
properties of an object

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Start with a normal PHP Object

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Tell Doctrine how to persist via annotations

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Persist the object

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Retrieve the object

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Questions?
Ryan Weaver
@weaverryan
www.iostudio.com