THIS IS CONSIDERED TO BE AN ANTI-PATTERN! FOR BETTER TESTABILITY AND MAINTAINABILITY USE DEPENDENCY INJECTION!
To have only one instance of this object in the application that will handle all calls.
- DB Connector
- Logger (may also be a Multiton if there are many log files for several purposes)
- Lock file for the application (there is only one in the filesystem ...)
You can also find this code on GitHub
.. literalinclude:: Singleton.php :language: php :linenos:
.. literalinclude:: Tests/SingletonTest.php :language: php :linenos: