PHP Design Patterns
https://www.pluralsight.com/courses/php-design-patterns

Design patterns, in any programming language, are the solution to common problems in software design. These are blueprints that can be customized to suit the need, unlike a library or a code file, which can be simply pasted into the out program. In this course, PHP Design Pattern, you will learn foundational knowledge of how using design patterns can make your application design flexible and extensible, following all the design principles. First, you will learn what exactly the design pattern is. Next, you will discover how they are categorized and learn about its types. Finally, you will explore the creational, structural, and behavioral design patterns in PHP. When you’re finished with this course, you will have the skills and knowledge of having a recommendable application design needed to manage and extend it, while keeping it simple.