Separating these three components allows the PHP Web Development Company to update, tweak, and control the web application according to your changing specifications and requirements. The MVC architecture will thus contribute to significantly improve your relationships with the PHP web development company. The most useful way to build a PHP application based on the MVC design outline is to leverage the power of templating system like Smarty for the Viewer, a PostgreSQL database as the Model, and object-oriented PHP classes as the Controller.

Now we shall study the MVC architecture in detail.

Though MVC comes in different flavors, control flow is generally as follows:

1. The user interacts with the user interface in some way (for example, presses a mouse button).
2. The Controller handles the input event from the user interface, often via a registered handler or callback and converts the event into appropriate user action, understandable for the Model.
3. The Controller notifies the Model of the user action, possibly resulting in a change in the Model’s state. (For example, the Controller updates the user’s shopping cart.)
4. A View queries the Model in order to generate an appropriate user interface (for example, the View lists the shopping cart’s contents). Note that the View gets its own data from the Model. The Controller may (in some implementations) issue a general instruction to the View to render itself. In others, the View is automatically notified by the Model of changes in state (Observer) which require a screen update.
5. The user interface waits for further user interactions, which restarts the cycle.

A PHP Web Development Company understands the intricate processing of the PHP – MVC architecture and helps you build a robust, reliable and secure PHP web application through open source PHP web development.