In PHP, a middleware is a piece of code that operates between the incoming HTTP request and the corresponding application logic. It allows developers to perform actions before the request reaches the main application or after the response is generated. Middlewares are commonly used in MaplePHP, to handle tasks like authentication, logging, or modifying the request/response.

When a request is made, it passes through a series of middlewares that can intercept, modify, or enhance the request or response. This modular approach simplifies the organization of code and promotes reusability. Middlewares can be chained together to create a pipeline of processing steps, providing a flexible and extensible way to handle various aspects of web application functionality.

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