PSR Pickup:
PSR-11:
Container Interface

By Frank Wallen

In this issue, we’ll discuss the Container Interface, PSR-11. The Container’s job is to act as a registry and return a service object identified by a unique key or name. Many modern frameworks and codebases implement Dependency Injection as a form of inversion of control, where the client requesting the service object does not need to know how to construct it. Usually, containers return service objects, but it could really be any valid object in the application. The responsibilities of the Container are configuring and fetching entries, leaving it up to the framework to fetch the necessary objects to compose the application. by Frank Wallen

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This article was originally published in the November 2022 issue of php[architect] magazine. To read the complete article please subscribe or purchase the complete issue.

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