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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpFoundation\Session;
use Symfony\Component\HttpFoundation\Session\Storage\MetadataBag;
/**
* Interface for the session.
*
* @author Drak <drak@zikula.org>
*/
interface SessionInterface
{
/**
* Starts the session storage.
*
* @return Boolean True if session started.
*
* @throws \RuntimeException If session fails to start.
*
* @api
*/
public function start();
/**
* Returns the session ID.
*
* @return string The session ID.
*
* @api
*/
public function getId();
/**
* Sets the session ID
*
* @param string $id
*
* @api
*/
public function setId($id);
/**
* Returns the session name.
*
* @return mixed The session name.
*
* @api
*/
public function getName();
/**
* Sets the session name.
*
* @param string $name
*
* @api
*/
public function setName($name);
/**
* Invalidates the current session.
*
* Clears all session attributes and flashes and regenerates the
* session and deletes the old session from persistence.
*
* @param integer $lifetime Sets the cookie lifetime for the session cookie. A null value
* will leave the system settings unchanged, 0 sets the cookie
* to expire with browser session. Time is in seconds, and is
* not a Unix timestamp.
*
* @return Boolean True if session invalidated, false if error.
*
* @api
*/
public function invalidate($lifetime = null);
/**
* Migrates the current session to a new session id while maintaining all
* session attributes.
*
* @param Boolean $destroy Whether to delete the old session or leave it to garbage collection.
* @param integer $lifetime Sets the cookie lifetime for the session cookie. A null value
* will leave the system settings unchanged, 0 sets the cookie
* to expire with browser session. Time is in seconds, and is
* not a Unix timestamp.
*
* @return Boolean True if session migrated, false if error.
*
* @api
*/
public function migrate($destroy = false, $lifetime = null);
/**
* Force the session to be saved and closed.
*
* This method is generally not required for real sessions as
* the session will be automatically saved at the end of
* code execution.
*/
public function save();
/**
* Checks if an attribute is defined.
*
* @param string $name The attribute name
*
* @return Boolean true if the attribute is defined, false otherwise
*
* @api
*/
public function has($name);
/**
* Returns an attribute.
*
* @param string $name The attribute name
* @param mixed $default The default value if not found.
*
* @return mixed
*
* @api
*/
public function get($name, $default = null);
/**
* Sets an attribute.
*
* @param string $name
* @param mixed $value
*
* @api
*/
public function set($name, $value);
/**
* Returns attributes.
*
* @return array Attributes
*
* @api
*/
public function all();
/**
* Sets attributes.
*
* @param array $attributes Attributes
*/
public function replace(array $attributes);
/**
* Removes an attribute.
*
* @param string $name
*
* @return mixed The removed value or null when it does not exist
*
* @api
*/
public function remove($name);
/**
* Clears all attributes.
*
* @api
*/
public function clear();
/**
* Checks if the session was started.
*
* @return Boolean
*/
public function isStarted();
/**
* Registers a SessionBagInterface with the session.
*
* @param SessionBagInterface $bag
*/
public function registerBag(SessionBagInterface $bag);
/**
* Gets a bag instance by name.
*
* @param string $name
*
* @return SessionBagInterface
*/
public function getBag($name);
/**
* Gets session meta.
*
* @return MetadataBag
*/
public function getMetadataBag();
}