Piwik\DataTable\Row::warnWhenSummingTwoStrings PHP Метод

    protected function warnWhenSummingTwoStrings($thisColumnValue, $columnToSumValue)
    {
        if (is_string($columnToSumValue)) {
            Log::warning("Trying to add two strings in DataTable\\Row::sumRowArray: %s + %s for row %s", $thisColumnValue, $columnToSumValue, $this->__toString());
        }
    }