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PHP and MySQL for Dynamic Web Sites: Visual QuickPro Guide, Fifth Edition by Larry Ullman

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3. Creating Dynamic Web Sites

With the fundamentals of PHP under your belt, it’s time to begin building truly dynamic web sites. Dynamic web sites, as opposed to the static ones on which the web was first built, are easier to maintain, are more responsive to users, and can alter their content in response to differing situations. This chapter introduces three new ideas, all commonly used to create more sophisticated web applications (Chapter 11, “Web Application Development,” covers another handful of topics along these same lines).

The first subject involves using external files. This is an important concept, ...

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