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Billion Factorial

Ghost
billionfactorial.com· irregular· Inactive for over a year

A tutorial series walking through SOLID object-oriented design principles in PHP, using a menu-maker project as a running example. Each issue explains one principle with code references and a worked refactoring example.

solid principlesdependency inversion principleliskov substitution principleinterface segregation principlephp tutorialoop designdesign patternsmenu makeropen closed principlecoding lessons
Platform
Ghost
Frequency
Irregular
Latest issue
Jun 12, 2014
Language
English
Written for
Junior PHP developers learning object-oriented design
Tone
practical
Tracked since
Oct 25, 2026

Website: https://www.billionfactorial.com/