Entity-Attribute-Value (EAV)__

The Entity–attribute–value (EAV) pattern in order to implement EAV model with PHP.

Purpose

The Entity–attribute–value (EAV) model is a data model to describe entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest.

UML Diagram

.. image:: uml/uml.png :alt: EAV UML Diagram :align: center

Code

You can also find this code on GitHub_

Entity.php

.. literalinclude:: Entity.php :language: php :linenos:

Attribute.php

.. literalinclude:: Attribute.php :language: php :linenos:

Value.php

.. literalinclude:: Value.php :language: php :linenos:

Test

Tests/EAVTest.php

.. literalinclude:: Tests/EAVTest.php :language: php :linenos:

.. _GitHub: https://github.com/DesignPatternsPHP/DesignPatternsPHP/tree/main/More/EAV .. __: https://en.wikipedia.org/wiki/Entity–attribute–value_model