laravel/laravel — pull request #3053 by buchs-kevin (2014-10-02 21:42:10+00:00)
Title: Added comments to indicate the exclusive nature of the two options for session timeouts

Expiration can be one or the other: lifetime or expire_on_close. See
http://stackoverflow.com/questions/26167047/authentication-in-laravel-4-persisting-beyond-session-timeout-is-this-localho?noredirect=1#comment41025042_26167047