PhpSpreadsheet Reader Example #13
        Simple File Reader for Multiple CSV Files
        ';
        $spreadsheet = $reader->load($inputFileName);
        $spreadsheet->getActiveSheet()->setTitle(pathinfo($inputFileName, PATHINFO_BASENAME));
        foreach ($inputFileNames as $sheet => $inputFileName) {
            echo 'Loading file ', pathinfo($inputFileName, PATHINFO_BASENAME), ' into WorkSheet #', ($sheet + 2), ' using IOFactory with a defined reader type of ', $inputFileType, '
';
            $reader->setSheetIndex($sheet + 1);
            $reader->loadIntoExisting($inputFileName, $spreadsheet);
            $spreadsheet->getActiveSheet()->setTitle(pathinfo($inputFileName, PATHINFO_BASENAME));
        }
        echo '
';
        echo $spreadsheet->getSheetCount(), ' worksheet', (($spreadsheet->getSheetCount() == 1) ? '' : 's'), ' loaded
';
        $loadedSheetNames = $spreadsheet->getSheetNames();
        foreach ($loadedSheetNames as $sheetIndex => $loadedSheetName) {
            echo 'Worksheet #', $sheetIndex, ' -> ', $loadedSheetName, '
';
            $spreadsheet->setActiveSheetIndexByName($loadedSheetName);
            $sheetData = $spreadsheet->getActiveSheet()->toArray(null, true, true, true);
            var_dump($sheetData);
            echo '
';
        }
        ?>