แบบทดสอบออนไลน์ random ข้อสอบ ตรวจคำตอบแล้วไม่ได้ครับ เช็คข้อที่ random คำตอบข้อนั้นได้

<? 
include("connectserver.php");
$correct=0;
$total=count($_REQUEST['totalans']);
$sqlAns= "select  id, reply from test ";
$resultAns=mysql_query($sqlAns);
$numrowsAns=mysql_num_rows($resultAns);
while( $fetchAns=mysql_fetch_array($resultAns)){
$id=$fetchAns['id'];
$answer=$fetchAns['reply'];
if (in_array($id, $_REQUEST['totalans'])){
$select=$_REQUEST['ans'.$id];
if ($select==$answer) {
$correct++ ;
}
}

}
echo "ทำถูกต้อง $correct ข้อ จากทั้งหมด $total ข้อ"; 

?>

      	              <div align="left">
      	                <form id="form1" name="form1" method="post" action="addans.php" enctype="multipart/form-data">
                        
      	                <br />
		<?
$sql2= "select  * from test where subjects='$codesu' and type='2' order by rand() limit 0,2";
$result2=mysql_query($sql2);
$numrows2=mysql_num_rows($result2);
$i2=0;
while( $i2<$numrows2){
	$fetch2=mysql_fetch_array($result2);
	$dbid=$fetch2['id'];
	$dbquestion=$fetch2['question'];
	$dboptions1=$fetch2['options1'];
	$dboptions2=$fetch2['options2'];
	$dboptions3=$fetch2['options3'];
	$dboptions4=$fetch2['options4'];

 ?>                
			&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;คำถาม :
							<? 
	$loadcontentda = "data/$dbquestion"; 
	$fpda = @fopen($loadcontentda, "r");
		$loadcontentda = @fread($fpda, @filesize($loadcontentda));
		$loadcontentda = htmlspecialchars($loadcontentda);
		$Detailda = stripslashes(FixQuotes($loadcontentda));
		@fclose($fpda);
		?>	
             <?=$Detailda ;?><br />
			 <?
		$loadopt1 = "data/$dboptions1"; 
		$fopt1 = @fopen($loadopt1, "r");
		$loadopt1 = @fread($fopt1, @filesize($loadopt1));
		$loadopt1 = htmlspecialchars($loadopt1);
		$Detailopt1 = stripslashes(FixQuotes($loadopt1));
		@fclose($fopt1);
		?>
		&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;คำตอบ
		<input name="ans<?=$dbid;?>" type="radio" value="1" />
		ที่ 1 :
		<?=$Detailopt1 ;?><br />
					 <?
		$loadopt2 = "data/$dboptions2"; 
		$fopt2 = @fopen($loadopt2, "r");
		$loadopt2 = @fread($fopt2, @filesize($loadopt2));
		$loadopt2 = htmlspecialchars($loadopt2);
		$Detailopt2 = stripslashes(FixQuotes($loadopt2));
		@fclose($fopt2);
		?>
		&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;คำตอบ
		<input name="ans<?=$dbid;?>" type="radio" value="2" />
		ที่ 2 :<?=$Detailopt2 ;?><br />
		<?
		$loadopt3 = "data/$dboptions3"; 
		$fopt3 = @fopen($loadopt3, "r");
		$loadopt3 = @fread($fopt3, @filesize($loadopt3));
		$loadopt3 = htmlspecialchars($loadopt3);
		$Detailopt3 = stripslashes(FixQuotes($loadopt3));
		@fclose($fopt3);
		?>
		&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;คำตอบ
		<input name="ans<?=$dbid;?>" type="radio" value="3" />
		ที่ 3 :<?=$Detailopt3 ;?><br />
					 <?
		$loadopt4 = "data/$dboptions4"; 
		$fopt4 = @fopen($loadopt4, "r");
		$loadopt4 = @fread($fopt4, @filesize($loadopt4));
		$loadopt4 = htmlspecialchars($loadopt4);
		$Detailopt4 = stripslashes(FixQuotes($loadopt4));
		@fclose($fopt4);
		?>
		&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;คำตอบ
		<input name="ans<?=$dbid;?>" type="radio" value="4" />
		ที่ 4 :<?=$Detailopt4 ;?>
	<input type='hidden' name='totalans[]' value='<?=$dbid;?>'> 
             <hr />
            
               <? $i2++; } ?>

             <p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
			
			  <input type="submit" name="Submit" value="   ส่งคำตอบ    " />
              <input type="reset" name="Reset" value="Reset" />
             </p>
      	                </form>
</div>