What is MVC Framework in Codeigniter?

CodeIgniter is based on the Model-View-Controller (MVC) development pattern. MVC is a software approach that separates application logic from presentation. In practice, it permits your web pages to contain minimal scripting since the presentation is separate from the PHP scripting.

• The Model represents your data structures. Typically, your model classes will contain functions that help you retrieve, insert and update information in your database.
• The View is information that is being presented to a user. A View will normally be a web page, but in CodeIgniter, a view can also be a page fragment like a header or footer. It can also be an RSS page, or any other type of “page”.
• The Controller serves as an intermediary between the Model, the View, and any other resources needed to process the HTTP request and generate a web page.
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