Php wants to check how to handle the expiration of session!

I am now using curl HTTP to check the number of databases on the other side

organizer A:
when I give him ac/pw, he will give me a session
I will record
he can also record
but now there is a problem

Container B:
when you log on to the same server again with server B,
the sesison of server A will fail, and the database of the counterparty will update this session
, that is, the invalid session has expired

but how do I know that if the session of this server A fails
I will let him jump to the login window?
I"m already dead this time.
can you tell me a way?
because the current session of the database is permanent
I also use my own to buy my own

Sessionstorage session-persistence session-failure session php

Feb.28,2021

you have to do something after you get the token, such as requesting a link. If the token fails, you will return an invalid error. If you know this error, you will request a new token. But in the final analysis, only one user is allowed to log in, and if you ask for a new one, you will kick out An again.

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