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Home/ Questions/Q 8129951
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Editorial Team
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Editorial Team
Asked: June 6, 20262026-06-06T08:30:16+00:00 2026-06-06T08:30:16+00:00

Possible Duplicate: Allow php sessions to carry over to subdomains How to setup user

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Possible Duplicate:
Allow php sessions to carry over to subdomains

How to setup user php $_SESSION to work in all subdomains?
Like Google makes it.

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  1. Editorial Team
    Editorial Team
    2026-06-06T08:30:25+00:00Added an answer on June 6, 2026 at 8:30 am

    There are several things to take in account while sharing $_SESSION across subdomains.

    1. Are all subdomains on ran by the same server?

      1. If not, then, you will need to share sessions amongst servers, there are several solutions:

        • Use NFS (not recommended)
        • Move SESSION to another storage (Database, Memcache, Redis) (best option imho)
      2. If they are, you may just need to configure your cookie domain using session.cookie_domain ini directive.

    2. Are you running Suhosin, if you do, you may need to disable some security options to allow your session to be decrypted on the others servers.

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