To minimise memory usage, a Flyweight shares as much as possible memory with similar objects. It is needed when a large amount of objects is used that don't differ much in state. A common practice is to hold state in external data structures and pass them to the flyweight object when needed.

You can also find these code on GitHub

FlyweightInterface.php

.. literalinclude:: FlyweightInterface.php
   :language: php
   :linenos:

CharacterFlyweight.php

.. literalinclude:: CharacterFlyweight.php
   :language: php
   :linenos:

FlyweightFactory.php

.. literalinclude:: FlyweightFactory.php
   :language: php
   :linenos:

Tests/FlyweightTest.php

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