The role of controllers in PHP development model MVC

The role of php controller

MVC is a method that separates business logic, data, and interface display. The role of its controller It gathers business logic into the controller, so that while improving and personalizing the interface and user interaction, there is no need to rewrite the business logic.

Introduction to the MVC programming model

MVC is a pattern that uses MVC (Model View Controller model-view-controller) to design and create web applications:

Model (model) represents the core of the application (such as a database record list).

View displays data (database records).

Controller handles input (writes database records).

The MVC pattern provides full control over HTML, CSS, and JavaScript at the same time.

Model (model) is the part of the application that handles application data logic.

Usually the model object is responsible for accessing data in the database.

View is the part of the application that handles data display.

Usually views are created based on model data.

Controller is the part of the application that handles user interaction.

Usually the controller is responsible for reading data from the view, controlling user input, and sending data to the model.

MVC layering helps manage complex applications because you can focus exclusively on one aspect at a time. For example, you can focus on view design without relying on business logic. It also makes application testing easier.

MVC layering also simplifies group development. Different developers can develop views, controller logic, and business logic simultaneously.

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