php export data to excel ทำไงดี เลือก radio กดค้นหาแล้วกดรูป excel ให้ออกรายงานไม่รู้ทำไงอะคะ

<? 
session_start();
.............
...................
.................
?>
<h1>ค้นหาข้อมูลครุภัณฑ์</h1>
<?
/*** แบ่งหน้า ***/
$page=$_GET['page'];

$rdo =$_GET['rdo'];
$keyword1 =$_GET['keyword1'];
$keyword2 =$_GET['keyword2'];
$keyword3 =$_GET['keyword3'];
$keyword4 =$_GET['keyword4'];
$keyword5 =$_GET['keyword5'];
$keyword6 =$_GET['keyword6'];
$keyword7 =$_GET['keyword7'];

if($page==0) $page=1;
$pagesize=20;
$sql="
SELECT 
durable.*,
branch.branch_name,
pd.place_durable_name,
IFNULL(bd.borrow_durable_status,0)  as borrow_durable_status
from durable
left join borrow_durable  as bd  on  bd.durable_id=durable.durable_id and  borrow_durable_status in(1,2)
left join branch on branch.branch_id=durable.branch_id
left join place_durable as pd on pd.place_durable_id=durable.place_durable_id


 ";

if($rdo=='1'){
	$sql.=" where durable.durable_id  ='$keyword1'  or  durable.durable_serial  ='$keyword2'  ";
}else if($rdo=='2'){
	$sql.=" where durable.durable_name like '%$keyword3%' ";
}else if($rdo=='3'){
	$sql.=" where durable.branch_id ='$keyword4' ";
}else if($rdo=='4'){
	$sql.=" where durable.place_durable_id ='$keyword5' ";
}else if($rdo=='5'){
	$sql.=" where durable.durable_status ='$keyword6' ";
}else if($rdo=='6'){
	
		$sql.=" having  borrow_durable_status ='$keyword7' ";

}

$query=mysql_query($sql) or die(mysql_error());
$totalrows=mysql_num_rows($query);
$totalpages=ceil($totalrows/$pagesize);
$start=($page-1)*$pagesize;

/**  ลิส เลขหน้า */
$list_page=" หน้าที่ ";
for($i=1;$i<=$totalpages;$i++){
	if($i==$page){
		$list_page.=" $i ";
	}else{
		$list_page.=" <a href='$_SERVER[PHP_SELF]?page=$i' >$i</a> ";
	}
}
?>
<form method='get' action='<?=$_SERVER[PHP_SELF]?>' >
	<table width="622" height="210" align="center" class='tbl_search'>
		<tr>
			<td width="136" class='td1'><input type='radio' name='rdo' value='1'  checked > รหัสครุภัณฑ์</td>
			<td width="200" class='td2'><input type='text' name='keyword1' style="width:200px; height:25px"></td>
			<td width="116" class='td1' align="right"> หมายเลขครุภัณฑ์</td>
			<td width="150" class='td2'><input type='text' name='keyword2'></td>
		</tr>
		<tr>
			<td class='td1'><input type='radio' name='rdo' value='2'  > ชื่อครุภัณฑ์</td>
			<td class='td2'><input name="keyword3" type="text" value="" style="150px; height:25px"/></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td class='td1'><input type='radio' name='rdo' value='3'   > สาขา</td>
			<td class='td2'>
				<select  name='keyword4' >
					<option value=''>กรุณาเลือก</option>
				<?
				$query2=mysql_query("select * from branch  order by branch_name asc ");
				while($res2=mysql_fetch_array($query2)){
					echo "<option value='$res2[branch_id]' >$res2[branch_name] </option>";
				}
				?>
				</select>
			</td>
			<td></td>
			<td></td>
		</tr>
		<tr>

			<td class='td1'><input type='radio' name='rdo' value='4'   > ตำแหน่งครุภัณฑ์</td>
			<td class='td2'>
				<select  name='keyword5' >
					<option value=''>กรุณาเลือก</option>
				<?
				$query2=mysql_query("select * from place_durable  order by place_durable_name asc ");
				while($res2=mysql_fetch_array($query2)){
					echo "<option value='$res2[place_durable_id]' >$res2[place_durable_name] </option>";
				}
				?>
				</select>
			</td>
			<td></td>
			<td></td>
		</tr>
		<tr>

			<td class='td1'><input type='radio' name='rdo' value='5'   > สถานะครุภัณฑ์</td>
			<td class='td2'>
				<select  name='keyword6' >
					<option value=''>กรุณาเลือก</option>
				<?
				$list_arr=array(
				"0"=>"ปกติ",
				"1"=>"ชำรุด",
				"2"=>"เสื่อมสภาพ",
				"3"=>"ส่งซ่อม",
				"4"=>"แทงจำหน่าย"
			);
				foreach($list_arr as $k=>$v){
				
					echo "<option value='$k' >$v </option>";
				}
				?>
				</select>
			</td>
			<td></td>
			<td></td>
		</tr>
		<tr>

			<td class='td1'><input type='radio' name='rdo' value='6'   > สถานะการยืม</td>
			<td class='td2'>
				<select  name='keyword7' >
					<option value=''>กรุณาเลือก</option>
				<?
				$list_arr=array(
				"0"=>"ว่าง",
				"1"=>"ถูกยืม",
				"2"=>"ค้างส่ง",
				"3"=>"รอยืนยัน"
			);
				foreach($list_arr as $k=>$v){
				
					echo "<option value='$k' >$v </option>";
				}
				?>
				</select>
			</td>
			<td></td>
			<td></td>
		</tr>
		
		<tr>
			<td class='td1'></td>
			<td class='td2'><input type='submit' value='ค้นหา' style="width:50px; height:25px"  /> <input type='reset' value='เคลียร์' style="width:50px; height:25px" /></td>
		</tr>
	</table>
</form>


<? if($_GET['rdo']>0 ) {?>
<?=$list_page?><center><input name="btnexport" type="image" id="btnexport" src="images/ms-icon-excel.gif" /></center>

<table align="center" class='tbl_show'>
	<tr>
		<th>รหัสครุภัณฑ์</th>
		<th>หมายเลขครุภัณฑ์</th>
		<th>ชื่อครุภัณฑ์</th>	
		
		<th>สาขา</th>
		<th>ตำแหน่งครุภัณฑ์</th>
	
		<th>สถานะครุภัณฑ์</th>
		<th>สถานะการยืม</th>
	</tr>
<?
$sql.=" order by durable.durable_id  asc  limit $start,$pagesize";
$query=mysql_query($sql);


while($res=mysql_fetch_array($query)){
	$arr =preg_split("/-/",$res['durable_date']);
	$durable_date =$arr[2]."/".$arr[1]."/".($arr[0]+543);
?>
	<tr>
		<td><?=$res['durable_id']?></td>
		<td><?=$res['durable_serial']?></td>
		<td><?=$res['durable_name']?></td>
		
		<td><?=$res['branch_name']?></td>
		<td><?=$res['place_durable_name']?></td>
		
		<td>
			<?
			$list_arr=array(
				"0"=>"ปกติ",
				"1"=>"ชำรุด",
				"2"=>"เสื่อมสภาพ",
				"3"=>"ส่งซ่อม",
				"4"=>"แทงจำหน่าย"
			);
			echo $list_arr[$res['durable_status']];
		?>
		</td>
		<td>
			<?
			$list_arr=array(
				
				"0"=>"รอยืนยัน",
			"1"=>"ยืม",
			"2"=>"ค้างส่ง",
			"3"=>"ว่าง"
			);
			echo $list_arr[$res['borrow_durable_status']];
		?>
		</td>
		

		
		
	</tr>
<?
}
?>

</table>
<?=$list_page?>
<? }?>



<? include ("include/footer.php")?>