SOLID Principles

PHP Course : SOLID - Single Responsibility

Clément Rigo January 24, 2019

Web Development

Have you ever heard about SOLID ? It is a collection of several Programming Principles that help developers write better code. There are five letters in SOLID, and each stand for a specific principle. In this article we will start with the first...

PHP Course : SOLID - Open-Closed

Clément Rigo February 07, 2019

Web Development

The second principle of S O LID is called Open-Closed , and helps developer to mature well designed code. This is a confusing one, but I'll try to make it easy to grasp. Definition First of all, this principle states that entities should be...

PHP Course : SOLID - Liskov Substitution

Clément Rigo February 11, 2019

Web Development

Third principle in this SOLID serie, the Liskov Substitution principle was imagined by Barbara Liskov. Definition Mathematical definition: Let q(x) be a property provable about object x of type T. Then q(y) should be provable for objects y o...

PHP Course : SOLID - Interface Segregation

Clément Rigo February 12, 2019

Web Development

"Interface Segregation"... what the hell does that mean now... It seems like all those principles were named to bring more confusion than clarity right ? Yet they are very easy to understand once you look at the right example. This one i...

PHP Course : SOLID - Dependency Inversion

Clément Rigo February 28, 2019

Web Development

Last but not least, the Dependency Inversion Principle! There is a common misunderstanding that "Dependency Inversion" is similar to "dependency injection." However, the two are not the same, as I explained in What Is Dependen...

I consider myself as an IT Business Artisan. Or Consultant CTO. I'm a self-taught Web Developper, coach and teacher. My main work is helping and guiding digital startups.

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