export excel ได้แล้วแต่อยากเพิ่มตรงหัวรายงานต้องทำอย่างไรค่ะ (มีตัวอย่าง Code)

<?  
    $connection=mysql_connect("localhost","root","11223344") or die("เชื่อมต่อไม่ได้");  
    mysql_select_db("reportloan") or die("ไม่สามารถเลือกฐานข้อมูลได้"); 
	mysql_query("SET NAMES TIS620"); 
	set_time_limit(0);
    $q="SELECT * FROM tb_report_acc_active";  
    $qr=mysql_query($q);  
    $row_num=mysql_num_rows($qr);  
	echo $row_num;
    $col_arr=array("AA","BB","CC","DD","EE","FF");  
    $col_num=count($col_arr); 
	echo  $col_num;
	echo $col_arr;
    header("Pragma: public");  
    header("Expires: 0");  
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");   
    header("Content-Type: application/force-download");  
    header("Content-Type: application/octet-stream");  
    header("Content-Type: application/download");;  
    header("Content-Disposition: attachment;filename=reportdataactive.xls");   
    ?>  
    <?php echo '<?xml version="1.0" encoding="windows-874"?>'; ?>  
      
    <?php echo'<?mso-application progid="Excel.Sheet"?>';?>  
      
    <Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"  
     xmlns:o="urn:schemas-microsoft-com:office:office"  
     xmlns:x="urn:schemas-microsoft-com:office:excel"  
     xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"  
     xmlns:html="http://www.w3.org/TR/REC-html40">  
     <Styles>  
      <Style ss:ID="Default" ss:Name="Normal">  
       <Alignment ss:Vertical="Bottom"/>  
       <Borders/>  
       <Font x:CharSet="222"/>  
       <Interior/>  
       <NumberFormat/>  
       <Protection/>  
      </Style>  
     </Styles>  
     <Worksheet ss:Name="รายงานความคืบหน้า">  
      <Table ss:ExpandedColumnCount="<?=$col_num?>" ss:ExpandedRowCount="<?=$row_num+1?>" x:FullColumns="1"  
       x:FullRows="1">  
       <Row>  
       <?php foreach($col_arr as $key=>$value){ ?>  
        <Cell><Data ss:Type="String"><?=$value?></Data></Cell>  
        <?php } ?>      
       </Row>  
    <?php  
    while($rs=mysql_fetch_array($qr)){  
    ?>     
       <Row>  
        <Cell><Data ss:Type="String"><?=$rs['report_oldgrpcd']?></Data></Cell>  
        <Cell><Data ss:Type="String"><?=$rs['report_acn']?></Data></Cell>  
        <Cell><Data ss:Type="String"><?=$rs['report_cid']?></Data></Cell> 
		<Cell><Data ss:Type="String"><?=$rs['report_title1']?></Data></Cell>
		<Cell><Data ss:Type="String"><?
			if($rs['report_oregno']==''){
				echo "ไม่มีข้อมูล";
			}else{
				echo $rs['report_oregno'];
			}?></Data></Cell> 
		<Cell><Data ss:Type="String"><?=$rs['report_bal']?></Data></Cell>       
       </Row>  
    <?php  }  ?>       
      </Table>  
      <WorksheetOptions xmlns="urn:schemas-microsoft-com:office:excel">  
       <Selected/>  
       <ProtectObjects>False</ProtectObjects>  
       <ProtectScenarios>False</ProtectScenarios>  
      </WorksheetOptions>  
     </Worksheet>  
    </Workbook>