This article provides a detailed explanation of how to implement the Chain of Responsibility pattern in PHP using object-oriented programming. The Chain of Responsibility pattern allows requests to be passed along a processing chain until a handler is able to process the request. By doing so, decoupling between different handlers is achieved, and the processing chain can be dynamically modified or new handlers can be added. The article illustrates this pattern with specific example code, demonstrating how to create handler classes, request classes, and how to combine them into an effective chain of responsibility, allowing for flexible handling of different request types. Additionally, it discusses how the Chain of Responsibility pattern decouples handlers, improving code maintainability and extensibility.