Using a DB abstraction class in a different class?

[Arty Ziff]

How does one go about using one class inside another?

 

For example, building a class that does some series of functions, and uses a db abstraction layer class in the process?

[trq]

Your first need to ensure that the database abstraction implements an interface that the other class understands. Then, simply instantiate the database class, and pass it to the other class via either a purpose build method, or the __construct, making sure you use type hinting to enforce the correct interface.