Similar to the AbstractFactory, this pattern is used to create series of related or dependent objects. The difference between this and the abstract factory pattern is that the static factory pattern uses just one static method to create all types of objects it can create. It is usually named factory or build.
You can also find this code on GitHub
StaticFactory.php
StaticFactory.php
Formatter.php
Formatter.php
FormatString.php
FormatString.php
FormatNumber.php
FormatNumber.php
Tests/StaticFactoryTest.php
Tests/StaticFactoryTest.php