ช่วยหน่อยคับจนปัญาจริงๆเกี่ยวกับวันที่ ภาษาไทยคับ ผมเพิ่งเขียน code webboard ใหม่อะคับ

<?
include "connect.php";
include "function.php";
$sql="select * from tb_question order by id_ques desc";
$result = mysql_db_query($dbname,$sql);
mysql_query("SET NAMES TIS620") ;

echo "
<h3>Webboard ¡ÃзÙé ¶ÒÁ - µÍº </h3>
<a href ='question_form.php' > µÑ駤ӶÒÁãËÁè</a><p>
<table width='100%' border='1'>
	<tr bgcolor='#d2e9ff'>
		<td width='8%'><center><b><font size='2' face='ms sans serif'>ÃËÑÊ</font></b></center></td>
		<td width='61%'><center><b><font size='2' face='ms sans serif'>ËÑÇ¢éͤӶÒÁ</font></b></center></td>
		<td width='15%'><center><b><font size='2' face='ms sans serif'>¼ÙéµÑ駤ӶÒÁ</font></b></center></td>
		<td width='16%'><center><b><font size='2' face='ms sans serif'>µÑé§àÁ×èÍÇѹ·Õè</font></b></center></td>
	</tr> ";


while ($record=mysql_fetch_array($result))
{
	$id_ques=$record [id_ques];
	$title_ques=$record[title_ques];
	$detail_ques=$record[detail_ques];
	$name_ques=$record[name_ques];
	$email_ques=$record[email_ques];
	$date_ques=$record[date_ques];

	$title_ques=htmlspecialchars ($title_ques);
	$name_ques=htmlspecialchars ($name_ques);
	$detail_ques=nl2br(htmlspecialchars ($detail_ques));
	$date_ques =displaydate ($date_ques);

	echo "
	<tr bgcolor='#ffffff'>
			<td  width='8%'><center><font size='2' face='ms sans serif'>#$id_ques</font></center></td>
			<td  width='61%'><font size='2' face='ms sans serif'><a href ='answer_view.php?id_ques=$id_ques'>$title_ques</a></font></td>
			<td  width='15%'><center><font size='2' face='ms sans serif'>$name_ques</font></center></td>
			<td  width='16%'><center><font size='2' face='ms sans serif'>$date_ques</font></center></td>
		</tr>";
	
} //end while
echo "</table>";
?>

<?
function displaydate ($x) {
	$thai_m=array("Á¡ÃÒ¤Á","¡ØÁÀҾѹ¸ì","ÁÕ¹Ò¤Á","àÁÉÒ¹","¾ÄÉÀÒ¤Á","ÁԶعÒ¹","¡Ã¡®Ò¤Á","ÊÔ§ËÒ¤Á","¡Ñ¹ÂÒ¹","µØÅÒ¤Á","¾ÄȨԡÒ¹","¸Ñ¹ÇÒ¤Á");
	$date_array=explode(" - " ,$x);
	$y=$date_array[0];
	$m=$date_array[1]-1;
	$d=$date_array[2];

	$m=$thai_m[$m];
	$y=$y+543;

	$displaydate=" $d  $m  $y";
	return $displaydate;
	}

	function checkemail ($checkemail)
		{
		if (eregi( "^[_a-z0-9-]+(.[_a-z0-9-]+)*@[a-z0-9-]+(.[a-z0-9-]+)*(.[a-z]{2,3})$", $checkemail) )
		{
			return true;
		}	else
				{
					return false;
				}
		}
?>