Oracle Database 10g Express Edition PHP Web Programming

Chapter 8. Objects

This chapter examines how you define, initialize, and use objects. It lays a foundation of what objects are and how object-oriented (OO) programming works by covering the following topics:

• Defining and using objects

  • Defining and instantiating objects

  • Defining and using variables, constants, and operations

  • Getters and setters

• Defining and using inheritance and polymorphism

  • Building subclasses and overriding operations

  • Using abstract classes and interfaces

• Implementing objects

  • Cloning objects

  • Comparing objects, printing objects, and type hinting

  • Using object reflection

As discussed in the last chapter, procedural programming functions perform well-defined tasks, and they hide the details of their operation. A collection of functions can ...