The MVC design pattern
Model View Controller (MVC) is a design pattern widely used in different programming languages. Most PHP frameworks use this design pattern. This pattern divides the application into three layers: Model, View, and Controller. Each one of these has separate tasks, and they are all interconnected. There are different visual representations for MVC, but an overall and simple representation can be seen in the following diagram:
Now, let's discuss each part of the MVC design pattern.
Model
The model layer is the backbone of the application and handles the data logic. Mostly, it is considered that model is responsible for CRUD operations on a database, which may or may not be true. As we mentioned previously, model is responsible for the data logic, which means that data validation operations can also be performed here. In simple words, models provide an abstraction for the data. The remaining application layers don't know or care how and from where the data comes...
