รบกวนพี่ๆค่ะ เขียน php ส่งออกเป็น xml อยากให้ select ข้อมูลออกมาตามแบบค่ะ

<?
$objConnect = mysql_connect("localhost","root","root") or die("Error Connect to Database");
$objDB = mysql_select_db("cipn");

$sql = "SELECT p.AN,
                  p.HN,
                  ps.CLASS,
				  COUNT(ps.id) as numm
             FROM ipadt p
             JOIN ipdxop ps ON ps.AN = p.AN
			 GROUP BY p.AN ";
   $result = mysql_query($sql) or die(mysql_error());
   
header("Content-type: text/xml; charset=utf-8");
$xml =new DOMDocument('1.0','charset=utf-8');
$xml="<CIPN>\n\t";


while($row = mysql_fetch_array($result)) 
{


	$xml .="<Header>\n\t\t";
	$xml .= "<DocClass>".IPclaim."</DocClass>\n\t\t";
	$xml .= "<DocSysID version='1.0'>".CIPN."</DocSysID>\n\t\t";
	$xml .= "<serviceEvent>".ADT."</serviceEvent>\n\t\t";
	$xml .= "<authorID>14595</authorID>\n\t";
	$xml .= "<authorName>".พรชัย."</authorName>\n\t";
	$xml .= "<authorID>".AN."</authorID>\n\t";
	$xml .= "<DocumentRef>255800000</DocumentRef>\n\t";
	$xml .= "<effectiveTime>255800000</effectiveTime>\n\t"; 
	$xml.="</Header>\n\t";
	//----------------------------------
	$xml .="<ClaimAuth >\n\t\t";
	$xml .= "<AuthCode>".xxxxxxxxxxxxxxx."</AuthCode>\n\t\t";
	$xml .= "<AuthDT>".yyyyyyyyyyyyy."</AuthDT>\n\t\t";
	$xml.="</ClaimAuth>\n\t";
	
	//---------------------------------------
    $xml .="<IPADT>".$row['AN']."|".$row['HN']."EOL";
    $xml.="</IPADT>\n\t";
	
	//................................................
	$xml.="<IPADxOp Recount='".$row['numm']."'>".$row['AN']."|".$row['CLASS']."|".$row['SUBCLASS']."|".$row['CODE']."|"
			.$row['DR']."|".$row['DATEIN']."|".$row['DATEOUT']."EOL";
	$xml.="</IPADxOp>\n\t";

}
$xml.="</CIPN>\n\r";
$xmlobj=new SimpleXMLElement($xml);
$xmlobj->asXML("text3.xml");
echo $xml;
?>