I use Yii2, how to be when the user "fell asleep", and during this time the session's lifetime has ended? It happens that he fell asleep on the form and starts entering some info, when he presses save, then there is no session on the screen and the user, in his form, cannot but save and cannot understand what is going on at all. How can I find out when the section has ended, what would leave the office?
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