- %1$s is private and should not be used in themes or plugins directly.
wp_set_all_user_settings ( $user_settings )
- (array) user_settings User settings.
- (bool|null) False if the current user can't be found, null if the current user is not a super admin or a member of the site, otherwise true.
- Introduced in WordPress: 2.8.0
- Deprecated in WordPress: —
Private. Sets all user interface settings.