/home/kueuepay/www/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/Column.php
<?php

namespace PhpOffice\PhpSpreadsheet\Worksheet;

class Column
{
    /**
     * \PhpOffice\PhpSpreadsheet\Worksheet\Worksheet.
     *
     * @var Worksheet
     */
    private $worksheet;

    /**
     * Column index.
     *
     * @var string
     */
    private $columnIndex;

    /**
     * Create a new column.
     *
     * @param string $columnIndex
     */
    public function __construct(Worksheet $worksheet, $columnIndex = 'A')
    {
        // Set parent and column index
        $this->worksheet = $worksheet;
        $this->columnIndex = $columnIndex;
    }

    /**
     * Destructor.
     */
    public function __destruct()
    {
        // @phpstan-ignore-next-line
        $this->worksheet = null;
    }

    /**
     * Get column index as string eg: 'A'.
     */
    public function getColumnIndex(): string
    {
        return $this->columnIndex;
    }

    /**
     * Get cell iterator.
     *
     * @param int $startRow The row number at which to start iterating
     * @param int $endRow Optionally, the row number at which to stop iterating
     */
    public function getCellIterator($startRow = 1, $endRow = null): ColumnCellIterator
    {
        return new ColumnCellIterator($this->worksheet, $this->columnIndex, $startRow, $endRow);
    }

    /**
     * Get row iterator. Synonym for getCellIterator().
     *
     * @param int $startRow The row number at which to start iterating
     * @param int $endRow Optionally, the row number at which to stop iterating
     */
    public function getRowIterator($startRow = 1, $endRow = null): ColumnCellIterator
    {
        return $this->getCellIterator($startRow, $endRow);
    }

    /**
     * Returns a boolean true if the column contains no cells. By default, this means that no cell records exist in the
     *         collection for this column. false will be returned otherwise.
     *     This rule can be modified by passing a $definitionOfEmptyFlags value:
     *          1 - CellIterator::TREAT_NULL_VALUE_AS_EMPTY_CELL If the only cells in the collection are null value
     *                  cells, then the column will be considered empty.
     *          2 - CellIterator::TREAT_EMPTY_STRING_AS_EMPTY_CELL If the only cells in the collection are empty
     *                  string value cells, then the column will be considered empty.
     *          3 - CellIterator::TREAT_NULL_VALUE_AS_EMPTY_CELL | CellIterator::TREAT_EMPTY_STRING_AS_EMPTY_CELL
     *                  If the only cells in the collection are null value or empty string value cells, then the column
     *                  will be considered empty.
     *
     * @param int $definitionOfEmptyFlags
     *              Possible Flag Values are:
     *                  CellIterator::TREAT_NULL_VALUE_AS_EMPTY_CELL
     *                  CellIterator::TREAT_EMPTY_STRING_AS_EMPTY_CELL
     * @param int $startRow The row number at which to start checking if cells are empty
     * @param int $endRow Optionally, the row number at which to stop checking if cells are empty
     */
    public function isEmpty(int $definitionOfEmptyFlags = 0, $startRow = 1, $endRow = null): bool
    {
        $nullValueCellIsEmpty = (bool) ($definitionOfEmptyFlags & CellIterator::TREAT_NULL_VALUE_AS_EMPTY_CELL);
        $emptyStringCellIsEmpty = (bool) ($definitionOfEmptyFlags & CellIterator::TREAT_EMPTY_STRING_AS_EMPTY_CELL);

        $cellIterator = $this->getCellIterator($startRow, $endRow);
        $cellIterator->setIterateOnlyExistingCells(true);
        foreach ($cellIterator as $cell) {
            /** @scrutinizer ignore-call */
            $value = $cell->getValue();
            if ($value === null && $nullValueCellIsEmpty === true) {
                continue;
            }
            if ($value === '' && $emptyStringCellIsEmpty === true) {
                continue;
            }

            return false;
        }

        return true;
    }

    /**
     * Returns bound worksheet.
     */
    public function getWorksheet(): Worksheet
    {
        return $this->worksheet;
    }
}
Best Practice

Best Practices

To ensure a smooth integration process and optimal performance, follow these best practices:

  1. Use secure HTTPS connections for all API requests.
  2. Implement robust error handling to handle potential issues gracefully.
  3. Regularly update your integration to stay current with any API changes or enhancements.