How can I keep my users logged in when visiting a sub-domain with PHP sessions?

Question

Is it possible to keep a PHP Session active when the user accesses the sub-domain of a site? Example: If a user visits www.example.com they're not logged in, but they're logged in on example.com

And, I want to make user profiles on username.example.com, but if I do that, they're not logged in for sub-domains.

I'm using the session_start(); function in php to handle the logins.

is that domain and sub domain running on same server (Apache)? — Jun Rikson, Jan 30 '15 at 08:01
possible duplicate http://stackoverflow.com/questions/4091677/php-authentication-with-multiple-domains-and-subdomains — Jun Rikson, Jan 30 '15 at 08:02

score 1 · Accepted Answer · answered Jan 30 '15 at 08:05

1

I would use cookies instead of sessions. They are very similar but will remain intact over subdomains.

answered Jan 30 '15 at 08:05

luv2code

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How can I keep my users logged in when visiting a sub-domain with PHP sessions?

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