How to delete/invalidate a php session different to the current one -

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i want prevent user login website multiple browsers simultaneously. server backend written in php. idea invalidate session user when logs in again.

to know session user has last logged in, store session id in mysql database (as varchar).

but how can invalidate session different current 1 in php?

please check answer provided on below urls

how prevent multiple logins in php website

how prevent multiple user login same user name , password?


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