Objects of a superclass should be replaceable with objects of its subclasses without breaking the application.
A high-level OrderManager should depend on a generic PaymentProcessorInterface rather than a specific PayPalPayment class. 📦 Understanding the .7z Context php-guide.7z
A class should have one, and only one, reason to change. Objects of a superclass should be replaceable with
The .7z extension indicates a compressed archive created with . In the context of a "PHP Guide," this archive likely contains: SOLID Principles in Laravel & PHP: A Practical Guide O: Open-Closed Principle (OCP) Classes should be open
In Laravel or standard PHP, a UserController should only handle HTTP requests. It should not directly calculate payroll or send emails; those tasks belong in separate services or observers. O: Open-Closed Principle (OCP)
Classes should be open for extension but closed for modification.
The acronym represents five essential rules for high-quality software architecture: S: Single Responsibility Principle (SRP)