The PHP Object Oriented method of programming brings many exciting possiblities to application code. Many of the theories surrounding PHP Object Oriented code comes from some simple concepts. To the new comer, some of these concepts seem a little abstract, and with good reason. Abstraction is a key concept on Object Oriented code, but to the un-initiated, may seem rather vague. This tutorial attempts to bring to light, the concept of abstration, class hierachies, and polymorphism. But rather than boggle the mind with pages of theory, lets look at how it works.
