SessionHandlerInterface::gc Cleanup old sessions &reftitle.description; abstract public intSessionHandlerInterface::gc intmaxlifetime Cleans up expired sessions. Called by session_start, based on session.gc_divisor, session.gc_probability and session.gc_maxlifetime settings. &reftitle.parameters; maxlifetime Sessions that have not updated for the last maxlifetime seconds will be removed. &reftitle.returnvalues; &returns.session.storage.retval;