Piwik\Plugins\Goals\Controller::formatConversionRate PHP Метод

    private function formatConversionRate($conversionRate, $columnName = 'conversion_rate')
    {
        if ($conversionRate instanceof DataTable) {
            if ($conversionRate->getRowsCount() == 0) {
                $conversionRate = 0;
            } else {
                $conversionRate = $conversionRate->getFirstRow()->getColumn($columnName);
            }
        }
        if (!is_numeric($conversionRate)) {
            $conversionRate = sprintf('%.' . self::CONVERSION_RATE_PRECISION . 'f%%', $conversionRate);
        }
        return $conversionRate;
    }