Sessions and Cookies
Sessions and Cookies
Sessions and cookies allow data to be persisted across multiple user requests. In plain PHP you may access them through the global variables $_SESSION and $_COOKIE, respectively. Yii encapsulates sessions and cookies as objects and thus allows you to access them in an object-oriented fashion with additional useful enhancements.
Sessions
Like requests and responses, you can get access to sessions via the session application component which is an instance of yii\web\Session, by default.