Abstract Class vs Interface in PHP

Abstract class and Interfaces and fairy same concept in OOP and that is the main reason for creating confusion. This article may help you to understand both concepts.

Abstract Class and Interface in PHP

PHP Polymorphism Explained Clearly By Examples

Abstract Class vs Interface :: Code In PHP

oop - What is the difference between an interface and abstract

What is the difference between interface and abstract class? - Quora

The difference between Traits, Interfaces, and Abstract Classes in

Abstract Class in Java - Learn with its Important Rules and

Interface Vs Abstract Class After Java 8

PHP Abstract Class