Web Application Development with PHP 4.0

Summary

In this chapter, you've learned a lot about PHP's advanced syntax and good coding practices. You've seen how to create constants using define(). Then the more tricky aspects of arrays were outlined, and you learned that you should use list()/each() to traverse hashes. We've explained PHP's OOP features, and shown you how and when to use them—and when to stick to procedural programming instead. Because PHP is an interpreted language, it allows many features that would be very hard to implement with traditional compiled programming languages: variable variables and functions, self-modifying code, and runtime evaluation of source code. With this knowledge, you're well prepared for advanced PHP programming, and a big step further on your ...