/**
 * Force the session to be saved and closed.
 *
 * Session data is usually stored after your script terminated without the need
 * to call close(), but as session data is locked to prevent concurrent
 * writes only one script may operate on a session at any time. When using
 * framesets together with sessions you will experience the frames loading one
 * by one due to this locking. You can reduce the time needed to load all the
 * frames by ending the session as soon as all changes to session variables are
 * done.
 */
public function close(): void

Examples

$session->close();