ช่วยดูโค้ดให้ด้วยครับ เกี่ยวกับการเรียกข้อมูลขึ้นมาดู

<?
include('config.php');

?>
<form id="form1" name="form1" method="post" action="">
  <table width="70%" border="1">
    <tr>
      <th scope="col">1</th>
      <th scope="col">2รหัสนักศึกษา</th>
      <th scope="col">3รหัสข้อสอบ</th>
      <th scope="col">4รายวิชา</th>
      <th scope="col">5</th>
      <th scope="col">6</th>
      <th scope="col">7</th>      
    </tr>
    <?
	$answer="";
    $sql="select * from exam_results where answers!='$answer' group by s_id";
$sql_result = mysql_query($sql) or die (mysql_error());
while ($sql_show = mysql_fetch_array($sql_result))
			
{
   ?>
    <tr>
      <td><?=$sql_show[er_id];?>ไม่ต้องแสดง&nbsp;</td>
      <td><?=$sql_show[s_id];?>&nbsp;</td>
      <td><?=$sql_show[ex_id];?>&nbsp;</td>
      <td><?=$sql_show[c_id];?>เปลี่ยนเป็นชื่อวิชา&nbsp;</td>
      <td><?=$sql_show[answer];?>ไม่ต้องแสดง&nbsp;</td>
      <td><?=$sql_show[score];?>ไม่ต้องแสดง&nbsp;</td>
      <td><a href="exam-check-select.php?check=<?=$sql_show['er_id']?>num=&amp; lt;?=$sql_show['s_id']&amp;xxx1=<?=$sql_show['s_id']?>&amp;xxx2=<?=$sql_show['ex_id']?>">ตรวจข้อสอบ</a>&nbsp;</td>      
    </tr>
    <?
	}
	?>
  </table>
</form>

<?
include('config.php');
$erid=$_GET[check];
$s=$_GET[xxx1];
$ex=$_GET[xxx2];
echo "$s $ex</br>";
$sql = "select * from exam_results as er , exam_news as en where er.s_id='$s' and er.ex_id='$ex' and en.id='$ex'";
$objQuery = mysql_query($sql); 
//$objResult = mysql_fetch_array($objQuery); 
//$objResult = mysql_fetch_array($objQuery);
echo "$objQuery";
?>
<?
while($objResult = mysql_fetch_array($objQuery))
{
?>
        		<form id="form1" name="form1" method="post" action="">
<table width="70%" cellpadding="0" cellspacing="0">
		  <tr>
            <td width="9%" align="right" valign="top" scope="col">คำถาม </td>
		    <td width="38%" align="left" valign="top" scope="col"><textarea id="question" rows="3" cols="30" name="question"><?=$objResult["question"];?></textarea></td>
		    <td width="20%" scope="col">คำตอบของนักศึกษา</td>
		    <td width="33%" scope="col"><?=$objResult["answers"];?></td>
		  </tr>
          <tr>
             <td valign="top" scope="col" align="right">เฉลย </td>
		    <td valign="top" scope="col" align="left"><textarea id="answer" rows="3" cols="30" name="answer"><?=$objResult["answer"];?></textarea></td>
            <td colspan="2" align="center" valign="middle" scope="col">คะแนนที่ได้ 
              <label>
              <input type="text" name="scores" id="scores" />
            คะแนน</label></td>
          </tr>
          <tr>
            <td colspan="3"  scope="col">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;คะแนน <?=$objResult["score"];?> คะแนน
            </LABEL></td>
            <td scope="col">&nbsp;</td>
          </tr>
          <tr>
            <td colspan="4" align="right" valign="top" scope="col">——————————————————————————————————————————   </td>
            <input name="numid" type="hidden" id="numid" value="<?=$objResult["num"];?>" />
              <input name="edit_id" type="hidden" id="edit_id" value="<?=$_REQUEST['xxx1']?>" />
              <input name="num" type="hidden" id="num" value="<?=$_REQUEST['xxx2']?>" />
          </tr>
		  </table>
          <?
		  }
		  ?>
          <input id="submit" value="บันทึก" type="submit" name="submit2" />
          </form>