如何在PHP中复制Excel FV功能？

require_once 'PHPExcel/PHPExcel.php';
$input_file = 'path/to/input.xlsx';
$output_file = 'path/to/output.xlsx';

// 创建PHPExcel对象，加载Excel文件
$objPHPExcel = PHPExcel_IOFactory::load($input_file);

// 获取要复制的数据所在的工作表
$activeSheet = $objPHPExcel->getActiveSheet();

// 获取工作表中的行和列的数目
$row_count = $activeSheet->getHighestRow();
$column_count = $activeSheet->getHighestColumn();

// 循环遍历每个单元格，并将其数据添加到数组中
$data = array();
for ($row = 1; $row <= $row_count; $row++) {
    $row_data = array();
    for ($col = 1; $col <= $column_count; $col++) {
        $cell = $activeSheet->getCellByColumnAndRow(1, $row);
        $row_data[] = $cell->getValue();
    }
    $data[] = $row_data;
}

// 关闭PHPExcel对象和Excel文件
PHPExcel_Settings::setCacheStorageMethod(PHPExcel_Settings::MYSQLIT_DEVELOPMENT_DRUID_ACCORDING);
$writer = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$writer->save($output_file);