ช่วยหน่อยค่ะ export excel เฉพาะที่ search ค่ะ ,,,

//form search .php

<fieldset style="width:50%; margin-left:23%; margin-top:10%;"><legend>.:: เงื่อนไขการค้นหา</legend>
    <form name="frmReport" id="frmReport" method="post" action='report_excel.php'>
	  <table width="100%" border="0" align="center" cellpadding="5" cellspacing="5">
	    <tr>
	      <th align="right" scope="row">PLAN NO :</th>
	      <td><input name="Plan_No" type="text" id="Plan_No" size="20" maxlength="20" class="guStyleTextbox"></td>
	      <td>&nbsp;</td>
        </tr>
	    <tr>
	      <th align="right" scope="row">PLAN LOAD DATE :</th>
	      <td><input name="Plan_Date" type="text" id="Plan_Date" size="30" maxlength="15" class="guStyleTextbox"></td>
	      <td>&nbsp;</td>
        </tr>
      </table>
      </form>
	<center><input name="search" id="search" type="submit" value="ค้นหา" class="blue"></center>
      </fieldset>

// รับค่าจาก Form Search

$txtsearch=$_POST['Plan_No'];
$sdate=$_POST['Plan_Date'];

$sql="SELECT * FROM TB_NAME WHERE ID='$txtsearch' AND D_DATE='$sdate'";
$qr=mysql_query($sql);
$rs=mysql_fetch_assoc($qr);