Object-oriented principles are fundamental to software development, and PHP, with its support for OOP, provides a robust and maintainable language for web development. Laravel, a popular PHP framework, takes advantage of OOP principles to provide a clean, elegant, and scalable architecture for building web applications. By understanding and applying OOP principles in PHP and Laravel, developers can build robust, maintainable, and scalable software systems.

Before diving into the complex principles, we must define the building blocks.

A class should have one, and only one, reason to change. It should do one thing well.