การตัดสต๊อกโดยการส่งค่าแบบ array ส่งไปอย่างไร รับอย่างไร การคิดคำนวณ

<div align="center">
	<table width="60%" border="0" cellspacing="0" cellpadding="0" >
	<tr> 
		<td bgcolor="">
			<table  width="100%" border="0" cellspacing="1" cellpadding="1">
				<tr bgcolor="#990000" > 
					<td width="7%"><div align="center"><font size="2" color="white">No#.</font></div></td>
					<td width=""><div align="center"><font size="2" color="white">Product</font></div></td>
					<td width="11%"><div align="center"><font size="2" color="white">Last Amount</font></div></td>
					<td width="15%"><div align="center"><font size="2" color="white">Unit</font></div></td>
					<td width="13%"><div align="center"><font size="2" color="white">put amount</font></div></td>
					<td width="11%"><div align="center"><font size="2" color="white">Unit</font></div></td>
					
				</tr>
			</table></td>
	</tr>
</table>

<?
$typeid=$_GET[typeid];
require_once"connect.inc.php";
$sql="select * from tb_stock_product where typeid='$typeid' ";
$result=mysql_db_query($dbname,$sql);
while($record=mysql_fetch_array($result)){
	$sql4="select * from tb_stock_product where typeid='$sess_id[$i]' ";
	$result4=mysql_db_query($dbname,$sql);
	$record4=mysql_fetch_array($result4);

	$sql2="select * from tb_stock_unit where unitid='$record[unitid]' ";
	$result2=mysql_db_query($dbname,$sql2);
	$record2=mysql_fetch_array($result2);
	if($bg == "#E1DFD7") { $bg="#ffffff"; } else { $bg="#E1DFD7"; }
?>
	
<table width="60%" border="0" cellspacing="0" cellpadding="0">
<tr> 
<td bgcolor="">
	<table width="100%" border="0" cellspacing="1" cellpadding="1">
		<tr > 
			<td bgcolor="<?=$bg?>"width="7%"><div align="center"><font size="2"><?=$record[id]?></font></div></td>
			<td bgcolor="<?=$bg?>"width=""><div align="center"><font size="2"><?=$record[name]?></font></div></td>
			<td bgcolor="<?=$bg?>"width="11%"><div align="center"><font size="2"><?=$record[amount]?></font></div></td>
			<td bgcolor="<?=$bg?>"width="15%"><div align="center"><font size="2"><?=$record2[unitname]?></font></div></td>
			<td width="12%"><div align="center"><font size="2" color="white"><input bgcolor="<?=$bg?>" type="text" name="amount[]" onkeyup="return chkOrder()"value="$sess_amount[$i]" size="5">
			</font></div></td>
			<td bgcolor="<?=$bg?>"width="10%">
			<font size="2">
			<select name="unitid">
			<?
			require_once"connect.inc.php";
			$sql3="select * from tb_stock_unit order by unitid ASC";
			$result3=mysql_db_query($dbname,$sql3);
			while($show3=mysql_fetch_array($result3)){
			echo"<option value='$show3[unitid]'>$show3[unitname]</option>";
			}
			?><input type="hidden" name="id_product" value="<?=$record[id]?>">
			</select></font></td>
			
	</tr></table>
</td>
</tr>
 </table>
<?}?>