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Editorial Team
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Asked: 2026-05-14T14:29:11+00:00

I’ve implemented a mysql-based session interface in php. I just found out that if

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I’ve implemented a mysql-based session interface in php.
I just found out that if I log in to my account using browser A (e.g. Chrome), and then I log in to the same account in another browser B (e.g. IE), each browser is assigned 2 separate session ids. How can I make it such that when I log in again using browser B, I retain the active session of the previous browser A?

The issue at hand is that I’m storing certain information in the session and the data not being synchronised between the same users in different browsers and is wrecking havoc. :S

Is there a way to achieve this?

Thanks!

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  1. Editorial Team

    If you’re storing the session in the database, add a mechanism whereby the userId is stored as part of your database’s session record, creating what I like to call a "semantic session". When the user logs in, check to see if another session already exists; if so, use session_id() to fixate the new session to the old session’s ID, which will join them (and should change your new session’s ID for all subsequent requests). Be sure to only perform this action during the login step, or you might end up with freaky race conditions of two sessions trying to be each other and "swapping".

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