8. Creating Web Applications

The book to this point has covered the fundamentals of programming with PHP; now it’s time to begin tying it all together into actual web applications. In this chapter, you’ll learn a number of functions and techniques for making your websites more professional, more feature-rich, and easier to maintain.

First, you’ll learn how to use external files to break pages into individual pieces, allowing you to separate the logic from the presentation. Then you’ll tinker with constants, ...

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