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7 changes: 7 additions & 0 deletions components/http_foundation/sessions.rst
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,13 @@ object-oriented interface using a variety of session storage drivers.
Sessions are used via the simple :class:`Symfony\\Component\\HttpFoundation\\Session\\Session`
implementation of :class:`Symfony\\Component\\HttpFoundation\\Session\\SessionInterface` interface.

.. caution::

Make sure your sessions aren't already initialized (which is,
for example, automatically done in the full-stack framework).
As initializing the Session object causes the session to be
started, which can lead to unexpected errors.
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Just noticed: The text must be indented by four instead of three tabs. And you should use a length of 72 characters per line.


Quick example::

use Symfony\Component\HttpFoundation\Session\Session;
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