ReceivePaymentHelper::getAvailableSmsProviderIds

static function getAvailableSmsProviderIds(): array
{
	$result = [];
	$list = self::getSmsSenderList();
	foreach ($list as $provider)
	{
		if (isset($provider['id']) && $provider['id'] !== '')
		{
			$result[] = (string)$provider['id'];
		}
	}
	return $result;
}