To implement a central storage for objects often used throughout the application, is typically implemented using an abstract class with only static methods (or using the Singleton pattern)

• Zend Framework 1: Zend_Registry holds the application's logger object, front controller etc.
• Yii Framework: CWebApplication holds all the application components, such as CWebUser, CUrlManager, etc.

You can also find these code on GitHub

Registry.php

.. literalinclude:: Registry.php
   :language: php
   :linenos:

Tests/RegistryTest.php

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