|Explicit domain for login cookies.
|Introduced in version:||pre 1.1.0|
|Removed in version:||still in use|
|Other settings: Alphabetical | By function|
Set to an explicit domain on the login cookies, e.g.
.mydomain.org for all your subdomains.
By default this isn't set, so php's
setcookie function will just set a cookie on the current domain.
This is a bad thing if e.g. your site is available from both
example.com, since users that log into the former will be logged out as soon as they visit the latter.