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

Class ...

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