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PHP Advanced and Object-Oriented Programming: Visual Quickpro Guide, Third Edition by Larry Ullman

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3. Advanced Database Concepts

In this book, I wanted to do a couple of things. First, I wanted to demonstrate and explain some advanced concepts and approaches. Second, I wanted to present solutions to common problems. This chapter addresses both of those goals equally.

For the first example, you’ll see how to use a database to store session data. Doing so offers many advantages, with improved security at the forefront. Next, you’ll find a thorough discussion on working with U.S. zip codes, including how to calculate the distances between two. The third example introduces stored functions, a ...

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