Now supports "persistence mode", to persist a single CSRF name/value pair throughout the life of a user's session. Added the following methods:
protected getLastKeyPair- gets the most recently generated key/value pair from storage.protected loadLastKeyPair- gets the most recently generated key/value pair from storage, and assign it to$this->keyPair.public setPersistentTokenModepublic getPersistentTokenMode
Note that if CSRF token validation fails, then the token should be renewed regardless of the persistence setting.
The methods getTokenName and getTokenValue now return null if $this->keyPair has not yet been set.
testPersistenceModeTrueBetweenRequestsArray- Token should persist between requests after initial creation, when stored in an array.testPersistenceModeTrueBetweenRequestsArrayAccess- Token should persist between requests after initial creation, when stored in an ArrayObject.testPersistenceModeFalseBetweenRequestsArray- Token should be changed between requests, when stored in an array.testPersistenceModeFalseBetweenRequestsArrayAccess- Token should be changed between requests, when stored in an ArrayObject.testUpdateAfterInvalidTokenWithPersistenceModeTrue- New token should be generated after an invalid request, even if persistence mode is enabled.