December 2013
Intermediate to advanced
532 pages
14h 31m
English
Content preview from PHP Objects, Patterns, and Practice, Fourth Edition
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CHAPTER 6
Objects and Design
Now that we have seen the mechanics of PHP’s object support in some detail, we will step back from the details and consider how best to use the tools that we have encountered. In this chapter, I introduce you to some of the issues surrounding objects and design. I will also look at the UML, a powerful graphical language for describing object-oriented systems.
This chapter will cover
- Design basics: What I mean by design, and how object-oriented design differs from procedural code
- Class scope: How to decide what to include in a class
- Encapsulation: Hiding implementation and data behind a class’s interface
- Polymorphism ...
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