ช่วยด้วยค่ะ งง ... คืองี้ค่ะ เราทำการรับข้อมูลแล้วบันทึกลง database แล้วค่ะ พอมาถึงขั้นตอนแก้ไข

<?
$po_status=$_POST[po_status];
$number_status=$_POST[number_status];
$count_status=$_POST[count_status];
$fname_status=$_POST[fname_status];
$name_status=$_POST[name_status];
$status=$_POST[status];
$memo=$_POST[memo];

include "connect.php";
$sql="update alai set po_status='$po_status',number_status='$number_status', count_status='$count_status',fname_status='$fnametype', name_status='$nametype', status='$statustype',memo='$memo' where id_status='id_edit' ";
$result=mysql_db_query($dbname,$sql);
if ($result) {
echo "<h3>แก้ไข บิลขายเรียบร้อยแล้วครับ</h3>";
echo "[ <a href=report.php>กลับหน้าหลัก</a> ] ";
} else {
echo "<h3>ไม่สามารถแก้ไขบิลขายได้</h3>";
}
mysql_close();
?>

<style type="text/css">
<!--
body {
	background-color: #CCCCCC;
}
.style2 {
	font-size: 14px;
	font-weight: bold;
}
-->
</style>
<div align="center">
  <p align="right" class="style2">[ <a href="addstatus.php">เพิ่มบิลขายใหม่</a> ]</p>
</div>
<?
include "function.php";
include "connect.php";


$no=1;
$sql="select * from alai order by id_status desc";
$result=mysql_db_query($dbname, $sql);
$sqlquery=mysql_db_query($dbname,$sql);



echo "
<center><h3>รายงานบิลขาย</h3>
<h4>จำนวนรายการบิลขาย มีทั้งหมด  ".mysql_num_rows($sqlquery)."  รายการ</h4></center>

<center><table width='80%' border='0'>
		<tr bgcolor='#000000'>
		<td width='2%'><center><b><font color='#FFFFFF' font size='2' face='MS Sans Serif'> ลำดับ</font></b></center></td>
		<td width='4%'><center><b><font color='#FFFFFF'font size='2' face='MS Sans Serif'>วันที่</font></b></center></td>
		<td width='5%'><center><b><font color='#FFFFFF'font size='2' face='MS Sans Serif'>เลขที่บิล</font></b></center></td>
		<td width='5%'><center><b><font color='#FFFFFF'font size='2' face='MS Sans Serif'>หมายเลขสมาชิก</font></b></center></td>
		<td width='3%'><center><b><font color='#FFFFFF'font size='2' face='MS Sans Serif'>จำนวน</font></b></center></td>
		<td width='5%'><center><b><font color='#FFFFFF'font size='2' face='MS Sans Serif'>ชื่อผู้เปิดบิลขาย</font></b></center></td>
		<td width='5%'><center><b><font color='#FFFFFF'font size='2' face='MS Sans Serif'>ชื่อผู้หยิบ</font></b></center></td>
		<td width='5%'><center><b><font color='#FFFFFF'font size='2' face='MS Sans Serif'>สถานะบิล</font></b></center></td>
		<td width='5%'><center><b><font color='#FFFFFF'font size='2' face='MS Sans Serif'>หมายเหตุ</font></b></center></td>
		<td width='3%'><center><b><font color='#FFFFFF'font size='2' face='MS Sans Serif'>ต้องการ</font></b></center></td>
</tr>";
		
		
		
while ($record=mysql_fetch_array($result)) {
		$id_status=$record[id_status];
		$po_status=$record[po_status];
		$number_status=$record[number_status];
		$count_status=$record[count_status];
		$fname_status=$record[fname_status];
		$name_status=$record[name_status];
		$status=$record[status];
		$memo=$record[memo];
		$date_today=$record[date_today];
	
				
		$date_today=htmlspecialchars($date_today);
		$po_status=htmlspecialchars($po_status);
		$number_status=htmlspecialchars($number_status);
		$count_status=htmlspecialchars($count_status);
		$fname_status=htmlspecialchars($fname_status);
		$name_status=htmlspecialchars($name_status);
		$status=htmlspecialchars($status);
		$memo=htmlspecialchars($memo);

		
		echo "
		<tr bgcolor='#FFFFFF'>
				<td width='2%' ><center><font size='2' face='MS Sane Serif'>$no</font></center></td>
				<td width='4%' ><center><font size='2' face='MS Sane Serif'>$date_today</font></center></td>
				<td width='5%' ><center><font size='2' face='MS Sane Serif'>$po_status</font></center></td>
				<td width='5%' ><center><font size='2' face='MS Sane Serif'>$number_status</font></center></td>
				<td width='3%' ><center><font size='2' face='MS Sane Serif'>$count_status</font></center></td>
				<td width='5%' ><center><font size='2' face='MS Sane Serif'>&nbsp;$fnametype[$fname_status]</font></center></td>
				<td width='5%' ><center><font size='2' face='MS Sane Serif'>&nbsp;$nametype[$name_status]</font></center></td>
				<td width='5%' ><center><font size='2' face='MS Sane Serif'>&nbsp;$statustype[$status]</font></center></td>
				<td width='5%' ><center><font size='2' face='MS Sane Serif'>$memo</font></center></td>
				<td width='3%' ><center><font size='2' face='MS Sane Serif'><a href=\"editstatus.php?id_edit=$id_status\">[ Edit ]</a></font></center></td>
		
			</tr>";
			$no++;
}
echo "</table>";
?>

////////////////////////////////////////////////////////editstatus.php
<?
$id_edit=$_GET[id_edit];

include "function.php";
include "connect.php";
$sql="select * from alai where id_status='$id_edit'";
$result=mysql_db_query($dbname,$sql);
$r=mysql_fetch_array($result);
		$id_status=$r[id_status];
		$po_status=$r[po_status];
		$number_status=$r[number_status];
		$count_status=$r[count_status];
		$fname_status=$r[fname_status];
		$name_status=$r[name_status];
		$status=$r[status];
		$memo=$r[memo];
?>
<html>
<head><title>แก้ไขบิลขาย</title>
<style type="text/css">
<!--
.style1 {
	font-size: 14px;
	font-weight: bold;
}
.style3 {font-size: 14}
.style4 {
	color: #FF0000;
	font-weight: bold;
}
-->
</style>
<meta http-equiv="Content-Type" content="text/html; charset=windows-874" /></head>
<body>
<h3 align="left"><span class="style1">[ <a href="report.php">กลับหน้ารายงาน</a> ]</span></h3>
<table width="800" border="0">
  <tr>
    <th bgcolor="#0000FF" scope="col"><div align="right"></div></th>
  </tr>
</table>
<p align="left"><strong>แก้ไขบิลขาย</strong></p>
<table width="800" border="0">
  <tr>
    <th bgcolor="#0000FF" scope="col"><div align="right"></div></th>
  </tr>
</table>
<form action="editstatus2.php" method="post" enctype="multipart/form-data">
  <table bordercolor="#FFFFFF" bgcolor="#FFFFFF">
<tr>
	<td bgcolor="#FFFFFF"><div align="left"><strong><span class="style3">เลขที่บิล :</span></strong></div></td>
	<td bgcolor="#FFFFFF"><div align="left"><span class="style3">
	  <input name="po_status" type="text" size="12" value="<?=$po_status?>"  /> 
	  <span class="style4">* </span></span></div></td>
</tr>
<tr>
	<td bgcolor="#FFFFFF"><div align="left"><strong><span class="style3">หมายเลขสมาชิก :</span></strong></div></td>
	<td bgcolor="#FFFFFF"><div align="left"><span class="style3">
	  <input name="number_status" type="text" size="12" value="<?=$number_status?>"  /> 
	  </span><span class="style4">*</span> </div></td>
</tr>
<tr>
	<td bgcolor="#FFFFFF"><div align="left"><strong><span class="style3">จำนวนรายการอะไหล่ :</span></strong></div></td>
	<td bgcolor="#FFFFFF"><div align="left"><span class="style3">
	  <input name="count_status" type="text" size="12" value="<?=$count_status?>"  /> 
	  <strong>รายการ</strong> </span><span class="style4">*</span> </div></td>
</tr>
<tr>
	<td bgcolor="#FFFFFF"><div align="left"><strong><span class="style3">ชื่อผู้เปิดบิลขาย :</span></strong></div></td>
	<td bgcolor="#FFFFFF">
			<div align="left"><span class="style3">
		    <select name="fname_status" >
		      <option value="0"> -- เลือก -- </option>
		      <?
			for ($i=1;$i<=count($fnametype);$i++) {
			if ($fname_status==$i) {
				echo "<option value='$i' selected>
				$fnametype[$i]</option>";
			} else {
				echo "<option value='$i' >$fnametype[$i]
				</option>";
			}
		}
		?>
	        </select> 
	    </span><span class="style4">*</span> </div></td>
</tr>
<tr>
	<td bgcolor="#FFFFFF"><div align="left"><strong><span class="style3">ชื่อผู้หยิบ :</span></strong></div></td>
	<td bgcolor="#FFFFFF">
			<div align="left"><span class="style3">
		    <select name="name_status" >
		      <option value="0"> -- เลือก -- </option>
		      <?
			for ($i=1;$i<=count($nametype);$i++) {
			if ($name_status==$i) {
				echo "<option value='$i' selected>
				$nametype[$i]</option>";
			} else {
				echo "<option value='$i' >$nametype[$i]
				</option>";
			}
		}
		?>
	        </select> 
	    </span><span class="style4">*</span> </div></td>
</tr>
<tr>
	<td bgcolor="#FFFFFF"><div align="left"><strong><span class="style3">ชื่อผู้เปิดบิลขาย :</span></strong></div></td>
	<td bgcolor="#FFFFFF">
			<div align="left"><span class="style3">
		    <select name="status" >
		      <option value="0"> -- เลือก -- </option>
		      <?
			for ($i=1;$i<=count($statustype);$i++) {
			if ($fname_status==$i) {
				echo "<option value='$i' selected>
				$statustype[$i]</option>";
			} else {
				echo "<option value='$i' >$statustype[$i]
				</option>";
			}
		}
		?>
	        </select> 
	    </span><span class="style4">*</span> </div></td>
</tr>
<tr>
	<td valign="top" bgcolor="#FFFFFF"><div align="left"><strong><span class="style3">หมายเหตุ :</span></strong></div></td>
	<td bgcolor="#FFFFFF"><div align="left"><span class="style3">
	  <textarea name="memo" cols="35" rows="5"><?=$memo?>
	  </textarea>
	</span><span class="style4">	  *</span> </div></td>
</tr>
<tr>
	<td bgcolor="#FFFFFF">
		
	    <div align="left">
	      <input name="id_edit" type="hidden" value="<?=id_edit?>" >	
          </div></td>
	<td bgcolor="#FFFFFF">
		<div align="left"><span class="style3">
		  <input type="Submit" value="Submit" >
		  <input type="Reset" value="Reset" >	
	    </span></div></td>
</tr>
</table>
</form>
<div align="center" class="style1"></div>
</body>
</html>

///////////////////////////////////////////////////////////////////// editstaus2.php
<? 
$po_status=$_POST[po_status]; 
$number_status=$_POST[number_status]; 
$count_status=$_POST[count_status]; 
$fname_status=$_POST[fname_status]; 
$name_status=$_POST[name_status]; 
$status=$_POST[status]; 
$memo=$_POST[memo]; 
 
 
include "connect.php"; 
$sql="update alai set po_status='$po_status',number_status='$number_status', count_status='$count_status',fname_status='$fnametype', name_status='$nametype',status='$statustype', memo='$memo' where id_status='id_edit' "; 
$result=mysql_db_query($dbname,$sql); 
if ($result) { 
echo "<h3>แก้ไข บิลขายเรียบร้อยแล้วครับ</h3>"; 
echo "[ <a href=report.php>กลับหน้าหลัก</a> ] "; 
} else { 
echo "<h3>ไม่สามารถแก้ไขบิลขายได้</h3>"; 
} 
mysql_close(); 
?>

<?
$sql="update alai set po_status='$po_status',number_status='$number_status', count_status='$count_status',fname_status='$fnametype', name_status='$nametype', status='$statustype',memo='$memo' where id_status='$id_edit' "; 
?>