Vendor/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/Worksheet.php
public function shrinkRangeToFit($range)
    {
        $maxCol = $this->getHighestColumn();
        $maxRow = $this->getHighestRow();
        $maxCol = Coordinate::columnIndexFromString($maxCol);

        $rangeBlocks = explode(' ', $range);
        foreach ($rangeBlocks as &$rangeSet) {
            $rangeBoundaries = Coordinate::getRangeBoundaries($rangeSet);

            if (Coordinate::columnIndexFromString($rangeBoundaries[0][0]) > $maxCol) {
                $rangeBoundaries[0][0] = Coordinate::stringFromColumnIndex($maxCol);
            }
            if ($rangeBoundaries[0][1] > $maxRow) {
                $rangeBoundaries[0][1] = $maxRow;
            }
            if (Coordinate::columnIndexFromString($rangeBoundaries[1][0]) > $maxCol) {
                $rangeBoundaries[1][0] = Coordinate::stringFromColumnIndex($maxCol);
            }
            if ($rangeBoundaries[1][1] > $maxRow) {
                $rangeBoundaries[1][1] = $maxRow;
            }
            $rangeSet = $rangeBoundaries[0][0] . $rangeBoundaries[0][1] . ':' . $rangeBoundaries[1][0] . $rangeBoundaries[1][1];
        }
        unset($rangeSet);
        $stRange = implode(' ', $rangeBlocks);

        return $stRange;
    }
public function shrinkRangeToFit($range)
    {
        $maxCol = $this->getHighestColumn();
        $maxRow = $this->getHighestRow();
        $maxCol = Coordinate::columnIndexFromString($maxCol);

        $rangeBlocks = explode(' ', $range);
        foreach ($rangeBlocks as &$rangeSet) {
            $rangeBoundaries = Coordinate::getRangeBoundaries($rangeSet);

            if (Coordinate::columnIndexFromString($rangeBoundaries[0][0]) > $maxCol) {
                $rangeBoundaries[0][0] = Coordinate::stringFromColumnIndex($maxCol);
            }
            if ($rangeBoundaries[0][1] > $maxRow) {
                $rangeBoundaries[0][1] = $maxRow;
            }
            if (Coordinate::columnIndexFromString($rangeBoundaries[1][0]) > $maxCol) {
                $rangeBoundaries[1][0] = Coordinate::stringFromColumnIndex($maxCol);
            }
            if ($rangeBoundaries[1][1] > $maxRow) {
                $rangeBoundaries[1][1] = $maxRow;
            }
            $rangeSet = $rangeBoundaries[0][0] . $rangeBoundaries[0][1] . ':' . $rangeBoundaries[1][0] . $rangeBoundaries[1][1];
        }
        unset($rangeSet);
        $stRange = implode(' ', $rangeBlocks);

        return $stRange;
    }
Accepts a range, returning it as a range that falls within the current highest row and column of the worksheet.

@param string $range

@return string Adjusted range value