Box\Spout\Reader\CSV\RowIterator::isEmptyLine PHP Метод

protected isEmptyLine ( array \| boolean $lineData ) : boolean
$lineData	array \| boolean	Array containing the cells value for the line
Результат	boolean	Whether the given line is empty

    protected function isEmptyLine($lineData)
    {
        return is_array($lineData) && count($lineData) === 1 && $lineData[0] === null;
    }

RowIterator