PHP Interfaces & Polymorphism - Interfaces Explained

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Published Feb 26, 2025

In this video, you will learn interfaces & polymorphism in object-oriented PHP. With simple to understand & practical examples, this video will help you understand what interfaces are, how they should be used & what problems interfaces solve. In addition to learning interfaces & polymorphism, you will also learn what are some of the differences between interfaces and abstract classes.

NOTE
5:20 - Overriding constants from the interface is now allowed in PHP 8.1, this video uses PHP 8.0 where it was not allowed & resulted in an error.

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