add(\Zend\Authentication\Storage\StorageInterface $storage, integer $priority)
clear() : void
||If clearing contents from storage is impossible|
isEmpty() : bool
If such storage is not found, then this chain storage itself is empty.
In case a non-empty storage is found then this chain storage is also non-empty. Report that, but also make sure that all storage with higher priorty that are empty are filled.
||If it is impossible to determine whether storage is empty|
read() : mixed
Return its value.
||If reading contents from storage is impossible|
write(mixed $contents) : void
||If writing $contents to storage is impossible|
$storageChain : \Zend\Stdlib\PriorityQueue
A storage placed in the priority queue with a higher priority is always used before using a storage with a lower priority.