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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 bool
*
* @throws \RuntimeException if session fails to start
*/
public function start();
/**
* Returns the session ID.
*
* @return string
*/
public function getId();
/**
* Sets the session ID.
*/
public function setId(string $id);
/**
* Returns the session name.
*
* @return string
*/
public function getName();
/**
* Sets the session name.
*/
public function setName(string $name);
/**
* Invalidates the current session.
*
* Clears all session attributes and flashes and regenerates the
* session and deletes the old session from persistence.
*
* @param int|null $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 bool
*/
public function invalidate(int $lifetime = null);
/**
* Migrates the current session to a new session id while maintaining all
* session attributes.
*
* @param bool $destroy Whether to delete the old session or leave it to garbage collection
* @param int|null $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 bool
*/
public function migrate(bool $destroy = false, int $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.
*
* @return bool
*/
public function has(string $name);
/**
* Returns an attribute.
*
* @param mixed $default The default value if not found
*
* @return mixed
*/
public function get(string $name, $default = null);
/**
* Sets an attribute.
*
* @param mixed $value
*/
public function set(string $name, $value);
/**
* Returns attributes.
*
* @return array
*/
public function all();
/**
* Sets attributes.
*/
public function replace(array $attributes);
/**
* Removes an attribute.
*
* @return mixed The removed value or null when it does not exist
*/
public function remove(string $name);
/**
* Clears all attributes.
*/
public function clear();
/**
* Checks if the session was started.
*
* @return bool
*/
public function isStarted();
/**
* Registers a SessionBagInterface with the session.
*/
public function registerBag(SessionBagInterface $bag);
/**
* Gets a bag instance by name.
*
* @return SessionBagInterface
*/
public function getBag(string $name);
/**
* Gets session meta.
*
* @return MetadataBag
*/
public function getMetadataBag();
}
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