Reference

Session Storage

zend-session comes with a standard set of storage handlers. Storage handlers are the intermediary between when the session starts and when the session writes and closes. The default session storage is Zend\Session\Storage\SessionArrayStorage.

Array Storage

Zend\Session\Storage\ArrayStorage provides a facility to store all information in an ArrayObject. This storage method is likely incompatible with 3rd party libraries and all properties will be inaccessible through the $_SESSION superglobal. Additionally ArrayStorage will not automatically repopulate the storage container in the case of each new request and would have to manually be re-populated.

Basic Usage

use Zend\Session\Storage\ArrayStorage;
use Zend\Session\SessionManager;

$populateStorage = ['foo' => 'bar'];
$storage         = new ArrayStorage($populateStorage);
$manager         = new SessionManager();
$manager->setStorage($storage);

Session Storage

Zend\Session\Storage\SessionStorage replaces $_SESSION, providing a facility to store all information in an ArrayObject. This means that it may not be compatible with 3rd party libraries, although information stored in the $_SESSION superglobal should be available in other scopes.

Basic Usage

use Zend\Session\Storage\SessionStorage;
use Zend\Session\SessionManager;

$manager = new SessionManager();
$manager->setStorage(new SessionStorage());

Session Array Storage

Zend\Session\Storage\SessionArrayStorage provides a facility to store all information directly in the $_SESSION superglobal. This storage class provides the most compatibility with 3rd party libraries and allows for directly storing information into $_SESSION.

Basic Usage

use Zend\Session\Storage\SessionArrayStorage;
use Zend\Session\SessionManager;

$manager = new SessionManager();
$manager->setStorage(new SessionArrayStorage());

Custom Storage

To create a custom storage container, you must implement Zend\Session\Storage\StorageInterface. This interface extends each of ArrayAccess, Traversable, Serializable, and Countable, and it is in the methods those define that the majority of implementation occurs. The following methods must also be implemented:

public function getRequestAccessTime() : int;

public function lock(int|string $key = null) : void;
public function isLocked(int|string $key = null) : bool;
public function unlock(int|string $key = null) : void;

public function markImmutable() : void;
public function isImmutable() : bool;

public function setMetadata(string $key, mixed $value, bool $overwriteArray = false) : void;
public function getMetadata(string $key = null) : mixed;

public function clear(inst|string $key = null) : void;

public function fromArray(array $array) : void;
public function toArray(bool $metaData = false) : array;