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2 parentsf5e9cd1 +cefeeb8 commita77e3d0Copy full SHA for a77e3d0
cookbook/session/php_bridge.rst
@@ -33,4 +33,14 @@ the example below:
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storage_id:session.storage.php_bridge
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handler_id:session.handler.native_file
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-For more details, see:doc:`/components/http_foundation/session_php_bridge`.
+..note::
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+
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+If the legacy application requires it's own session save-handler, do not
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+override this, rather set ``handler_id: ~``. Note that a save handler cannot
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+be changed once the session has been started. If the application starts the
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+session before Symfony initializes the save-handler will have already been
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+set. You will need ``handler_id: ~``. Only override the save-handler if you
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+are sure the legacy application can use the Symfony save-handler without
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+side effects and that the session has not been started before Symfony inializes.
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+For more details, see:doc:`/components/http_foundation/session_php_bridge`.