PHPOffice / PhpSpreadsheet

     * @param int $startRow The row number at which to start iterating

     * @param int $endRow Optionally, the row number at which to stop iterating

     */

    public function __construct(\PhpOffice\PhpSpreadsheet\Worksheet $subject = null, $columnIndex = 'A', $startRow = 1, $endRow = null)

    {

        // Set subject

        $this->subject = $subject;

        $this->columnIndex = \PhpOffice\PhpSpreadsheet\Cell::columnIndexFromString($columnIndex) - 1;

        $this->resetEnd($endRow);

        $this->resetStart($startRow);

    }

    /**

     * Destructor.

     * @param string $startColumn The column address at which to start iterating

     * @param string $endColumn Optionally, the column address at which to stop iterating

     */

    public function __construct(\PhpOffice\PhpSpreadsheet\Worksheet $subject = null, $rowIndex = 1, $startColumn = 'A', $endColumn = null)

    {

        // Set subject and row index

        $this->subject = $subject;

        $this->rowIndex = $rowIndex;

        $this->resetEnd($endColumn);

        $this->resetStart($startColumn);

    }

    /**

     * Destructor.