Explain the concept of MVC (Model-View-Controller) architecture and its relevance in PHP web development.

The Model-View-Controller (MVC) architecture is a widely adopted design pattern in web development, including PHP, that helps in structuring and organizing code to enhance the maintainability, scalability, and reusability of applications. MVC divides an application into three interconnected components: the Model, the View, and the Controller. 1. Model: The Model represents the data and business logic of the application. It encapsulates the data structures, database interactions, validations, and any other operations related to data manipulation. In PHP, the Model typically consists of classes or objects that interact with the database, perform CRUD (Create, Read, Update, Delete) operations, and enforce business rules. The Model is responsible for retrieving and updating data, as well as implementing the application's core logic. 2. View: The View represents the user interface (UI) of the application. It is responsible for presenting the data from the Model to the users in a visually appealing and user-friendly manner. In PHP, the View is often implemented using templates or HTML files combined with embedded PHP code or a templating engine. The View focuses on displaying data and handling user interactions, but it should not contain complex business logic. In....