Manual talk:$wgSessionsInMemcached

   This file gets included if $wgSessionsInMemcached is set in the config.
   It redirects session handling functions to store their data in memcached
   instead of the local filesystem. Depending on circumstances, it may also
   be necessary to change the cookie settings to work across hostnames.
   * See: http://www.php.net/manual/en/function.session-set-save-handler.php 

What does this mean? There doesn't seem to be any useful info on that link. What do you have to tweak to get sessions to work across hostnames? --Cneubauer 15:22, 17 November 2011 (UTC)