Arsenal PHP Singleton Trait: Trait to make classes only have singleton objects

This package provides a trait to make classes only have singleton objects.

The trait provides a getter function that initializes an object on the first time a variable of the class is accessed with an instance of the target object that will act as a singleton object for the class.

A setter function will assign the variables of the target object that acts as singleton object for that class.

A constant array can be used to define how to map classes to target classes that will have objects acting as singletons.