6 Object–Oriented PHP

THIS CHAPTER EXPLAINS CONCEPTS OF OBJECT-ORIENTED (OO) development and shows how they can be implemented in PHP.

PHP’s OO implementation has all the features you would expect in a fully object-oriented language. We point out each of these features as we go through this chapter.

Key topics covered in this chapter include

Image  Object-oriented concepts

Image  Classes, attributes, and operations

Image  Class attributes

  Per-class constants

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