PHP Attributes Aid Documentation but Cannot Replace a Full Doc Strategy

PHP attributes allow developers to attach structured, machine-readable metadata directly to classes, methods, and parameters, making them useful for capturing implementation details close to the code. Tools like swagger-php leverage attributes to auto-generate API reference output, reducing drift between code and documentation. However, attributes are inherently limited to declarative, local facts and cannot convey intent, tradeoffs, or workflow context that readers often need most. Relying solely on attributes typically produces reference output that is technically populated but editorially incomplete. Experts recommend treating attributes as a data source layer that feeds a broader documentation system, rather than as a standalone solution.