SimpleMachines / SMF2.1

			{

				//Build an array of ALL user membergroups.

				$full_groups = array($user_settings['id_group']);

				if (!empty($user_settings['additional_groups']))

				{

					$full_groups = array_merge($full_groups, explode(',', $user_settings['additional_groups']));

					$full_groups = array_unique($full_groups); //duplicates, maybe?

				}

				//Find out if any group requires 2FA

				$request = $smcFunc['db_query']('', '

		elseif ($modSettings['tfa_mode'] == 2 && $context['user']['is_owner'])

		{

			$groups = array($user_settings['id_group']);

			if (!empty($user_settings['additional_groups']))

				$groups = array_unique(array_merge($groups, explode(',', $user_settings['additional_groups'])));

			$request = $smcFunc['db_query']('', '

				SELECT id_group