ดึงข้อมูลนักเรียนขึ้นมาแล้วเพิ่มคะแนนลงไปอีกตาราง แบบ insert ทีเดียวหลาย record รบกวนด้วยนะครับ

<?php  
$room = $_POST[room];  
$con =mysql_connect ("localhost","root","root");
mysql_select_db("test",$con);
mysql_query("SET NAMES tis620");
$sql = "select * from student where  stu_room = '$room' ";								
$result = mysql_query($sql);
$num = mysql_num_rows($result);
echo "$room มีรายชื่อนักเรียนทั้งหมด  [ $num ]  คน </font>";
  ?>
  <?
  $line = "$num";
  if($line == 0){$line=1;}
  for($i=1;$i<=$line;$i++)
  {
  while ($data = mysql_fetch_array($result) ) {	  
  ?>  
  <tr>
    <td><input type="text" name="stu_id_student<?=$i;?>" size="10" value="<?php echo $data[stu_id_student]; ?>" readonly="readonly"></td>
    <td><input type="text" name="stu_name<?=$i;?>" size="20" value="<?php echo $data[stu_name]; ?>" readonly="readonly"></td>
    <td><input type="text" name="stu_lastname<?=$i;?>" size="20" value="<?php echo $data[stu_lastname]; ?>" readonly="readonly"></td>	
    <td><input type="text" name="e_grade<?=$i;?>" size="5"></td>	
  </tr>
  <?
  }//while
  }
  ?>
  </table>
  <input type="submit" name="submit" value="submit">
  <input type="hidden" name="hdnLine" value="<?=$i;?>">
  </form>

<?
	$objConnect = mysql_connect("localhost","root","root") or die("Error Connect to Database");
	$objDB = mysql_select_db("test");
	
	for($i=1;$i<=$_POST["hdnLine"];$i++)
	{
		if($_POST["e_student_id$i"] != "")
		{
			$strSQL = "INSERT INTO rec ";
			$strSQL .="(e_student_id,e_code_subject,e_grade,e_term) ";
			$strSQL .="VALUES ";
			$strSQL .="(','".$_POST["e_student_id$i"]."', ";
			$strSQL .="'".$_POST["e_code_subject$i"]."' ";
			$strSQL .=",'".$_POST["e_grade$i"]."','".$_POST["e_term$i"]."') ";
			$objQuery = mysql_query($strSQL);
		}
	}
	echo "Save Done.";
mysql_close($objConnect);
?>