fe_user->user['tx_nuh_layout']; $userid = $GLOBALS['TSFE']->fe_user->user['uid']; $update_array = []; $update_array['tx_nuh_layout'] = 'light' == $theme ? 'dark' : 'light'; DbFunction::secureUpdate('fe_users', $update_array, ['uid' => $userid]); echo 1; exit; } }