Chapter 7. Advanced OOP Features
Chapter 6 introduced the fundamentals of object-oriented programming (OOP). This chapter builds on that foundation by introducing several of PHP's more advanced OOP features. Specifically, this chapter introduces the following five features:
Object cloning: One of the major improvements to PHP's object-oriented model in version 5 is the treatment of all objects as references rather than values. However, how do you go about creating a copy of an object if all objects are treated as references? By cloning the object.
Inheritance: As discussed in Chapter 6, the ability to build class hierarchies through inheritance is a fundamental OOP concept. This chapter introduces PHP's inheritance features and syntax, and it includes ...
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