Chapter 4. Implementing with PHP: Templates and the Web

An object-oriented programming pattern that people often try to apply to Web programming is Model-View-Controller (MVC). MVC dictates that an application be separated into three components:

  • Model—. The internals of the system that perform all the core business logic.

  • View—. The piece that handles formatting all output of the system.

  • Controller—. The piece that processes input and communicates it to the model.

MVC originated as a SmallTalk paradigm for building agile desktop applications in which a given business process can have multiple methods of receiving data and returning output. Most Web systems receive data in only a single fashion (via some sort of HTTP request), and at any ...

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