symfony 2中的用户会话混淆

Question

How can I handle user session in symfony? because I'm reading the book of symfony 2 and it says:

Storing and retrieving information from the session can be easily achieved from any controller:

$session = $this->getRequest()->getSession();
// store an attribute for reuse during a later user request
$session->set('foo', 'bar');
// in another controller for another request
$foo = $session->get('foo');
// use a default value if the key doesn't exist
$filters = $session->get('filters', array());

I wonder how to destroy the session. I'm a newbie in symfony so please explain. I'm confused because I found a thread that says its not the way to handle user sessions in symfony2 http://forum.symfony-project.org/viewtopic.php?f=23&t=42766

Answer 1

The link you pointed to is how it used to be until Symfony 2.2 (I think) - that is, it is outdated. Which exact version do you have installed?

You create session by:

$session = new Session();

If you want to invalidate whole session:

$session->invalidate();

of just single value:

$session->remove('some_key');

You can find complete API of Session here.