TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:09 +02:00
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+.. include:: /Includes.rst.txt
+
+.. _feature-92884:
+
+=======================================================================
+Feature: #92884 - Applications implement PSR-15 RequestHandlerInterface
+=======================================================================
+
+See :issue:`92884`
+
+Description
+===========
+
+The TYPO3 core has three application classes: frontend, backend and install tool.
+Those are the main entry points to retrieve a PSR-7 response from a PSR-7 request.
+These application classes now implement the PSR-15 :php:`RequestHandlerInterface`.
+
+
+Impact
+======
+
+Implementing the interface increases interoperability with third party applications
+and allows feeding a PSR-7 request to one of the three applications and
+retrieve a PSR-7 response.
+
+Within TYPO3, a first usage is the testing framework: A functional backend test
+can call the frontend application to verify if content is rendered as expected.
+At the moment, the TYPO3 internal state is still a bit tricky, though. There are
+various places that for instance park state in static class properties which can
+not be reset easily. Those areas are "dirty" after a request has been handled.
+Additionally, TYPO3 still alters various :php:`$GLOBALS` while handling a request.
+The testing framework works around that at the moment.
+
+While the situation will improve over time, third party applications should handle
+this feature with care for the time being and may need to take care of additional
+state clearing steps.
+
+.. index:: PHP-API, ext:core