Extend Catalog Rule Conditions

Implementation of PHP Abstract Class & Interfaces, by Faysal Ahmed, Oceanize Lab Geeks

Stop using “extends” in PHP

PHP 7 Nested Anonymous Classes Tutorial - PHP Classes

PHP OOP : Inheritance - scmGalaxy

PHP class hierarchy for library system

case sensitivity of class name - PHP - W3Schools Forum

Master/fixed layout in Laravel.

OOP PHP Class

Matthieu Napoli on X: It's finally time: myclabs/php-enum now guides you to upgrade to native PHP enums with PHP 8.1. 9 years, 2400 stars, 31 contributors, 56 million downloads… Goodbye little package.

Object-Oriented PHP: Working with Inheritance