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Advanced PHP

Although PHP is considered a scripting language, it has quite a number of advanced features. There isn't room enough in this chapter to cover every one of those features, so I'll only discuss creating custom functions and working with MySQL.

Functions

PHP has hundreds (if not thousands) of built-in functions, some of which you've already been introduced to. A function is merely encapsulated code, a repeatable process that you can call on to perform a task.


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