Understanding SOLID Principles in Object‑Oriented Design
This article explains the five SOLID object‑oriented design principles—Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion—while also promoting a PHP online training program that covers modern web technologies and offers enrollment via QR code or contact details.
S.O.L.I.D is an acronym for five object‑oriented design principles introduced by Robert C. Martin (Uncle Bob), which help developers create software that is easy to extend, maintain, refactor, and adapt.
The five principles are:
S – Single Responsibility Principle
O – Open/Closed Principle
L – Liskov Substitution Principle
I – Interface Segregation Principle
D – Dependency Inversion Principle
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