问Phpexcel不能写入xls 97-2003格式

EN

                <?
require_once '../Classes/PHPExcel.php';
require_once '../Classes/PHPExcel/IOFactory.php';
require_once '../Classes/PHPExcel/Writer/Excel2007.php';

 $objPHPExcel = PHPExcel_IOFactory::load("../../ruw/myfile.xlsx");
 $objPHPExcel->setActiveSheetIndex(0);
 $row = $objPHPExcel->getActiveSheet()->getHighestRow()+1;


 $objPHPExcel->getActiveSheet()->SetCellValue("A5",$m5);
 $objPHPExcel->getActiveSheet()->SetCellValue("B5",$m1);

    $objPHPExcel->getActiveSheet()->getStyle('A1:L300')->
    getProtection()->setHidden(PHPExcel_Style_Protection::OTECTION_PROTECTED);

  $objPHPExcel->getActiveSheet()->getProtection()->setSheet(true);
  $objPHPExcel->getActiveSheet()->getProtection()->setSort(true);
  $objPHPExcel->getActiveSheet()->getProtection()->setInsertRows(true);
  $objPHPExcel->getActiveSheet()->getProtection()->setInsertColumns(true);
  $objPHPExcel->getActiveSheet()->getProtection()->setFormatCells(true);
  $objPHPExcel->getActiveSheet()->getProtection()->setFormatColumns(true);
   $objPHPExcel->getActiveSheet()->getProtection()->setDeleteColumns(true);
   $objPHPExcel->getActiveSheet()->getProtection()->setDeleteRows(true);
   $objPHPExcel->getActiveSheet()->getProtection()->setSelectLockedCells(true);
   $objPHPExcel->getActiveSheet()->getProtection()->setPassword($passy);


    $objDrawing->setWorksheet($objPHPExcel->getActiveSheet());
    $objWriter = new PHPExcel_Writer_Excel2007($objPHPExcel);

   $d =$m1;
   $d = preg_replace('/[^a-zA-Z0-9%$#@*&^-_()]/','',$m1);
   $fil = "../../ruw/".$d.".xlsx";
   $objWriter->save($fil);

    echo "<label style='font:Verdana, Geneva, sans-serif; font-size:20px; color:#CE0000'>
    File download start automatically if not click here to </label>&nbsp;";
    echo "<a  style='font:Verdana, Geneva, sans-serif; color:#000; font-weight:bold;'   href='$fil'>Download</a>&nbsp;";
   echo "<script type='text/javascript'>" ;
    echo "reply_click(".$_SESSION['mid'].",'$fil')";
    echo "</script>";
    ?>