State__

Purpose

Encapsulate varying behavior for the same routine based on an object's state. This can be a cleaner way for an object to change its behavior at runtime without resorting to large monolithic conditional statements.

UML Diagram

.. image:: uml/uml.png :alt: Alt State UML Diagram :align: center

Code

You can also find this code on GitHub_

ContextOrder.php

.. literalinclude:: ContextOrder.php :language: php :linenos:

StateOrder.php

.. literalinclude:: StateOrder.php :language: php :linenos:

CreateOrder.php

.. literalinclude:: CreateOrder.php :language: php :linenos:

ShippingOrder.php

.. literalinclude:: ShippingOrder.php :language: php :linenos:

OrderDone.php

.. literalinclude:: OrderDone.php :language: php :linenos:

Test

Tests/StateTest.php

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

.. _GitHub: https://github.com/DesignPatternsPHP/DesignPatternsPHP/tree/main/Behavioral/State .. __: http://en.wikipedia.org/wiki/State_pattern