Sorun burada mı anlamadım arada bir çift çekim yapıyor, bulamadım da kafa durdu sanırım
kod aşağıdaki şeklide
2 kere de çağırmıyorum hatayı farkeden var mı

    
// XML request sablonu
$request= "DATA=<?xml version=\"1.0\" encoding=\"ISO-8859-9\"?>
<CC5Request>
<Name>{NAME}</Name>
<Password>{PASSWORD}</Password>
<ClientId>{CLIENTID}</ClientId>
<IPAddress>{IP}</IPAddress>
<Email>{EMAIL}</Email>
<Mode>P</Mode>
<OrderId>{OID}</OrderId>
<GroupId></GroupId>
<TransId></TransId>
<UserId></UserId>
<Type>{TYPE}</Type>
<Number>{CCNO}</Number>
<Expires>{CCTAR}</Expires>
<Cvv2Val>{CV2}</Cvv2Val>
<Total>{TUTAR}</Total>
<Currency>949</Currency>
<Taksit>{TAKSIT}</Taksit>
<BillTo>
<Name></Name>
<Street1></Street1>
<Street2></Street2>
<Street3></Street3>
<City></City>
<StateProv></StateProv>
<PostalCode></PostalCode>
<Country></Country>
<Company></Company>
<TelVoice></TelVoice>
</BillTo>
<ShipTo>
<Name></Name>
<Street1></Street1>
<Street2></Street2>
<Street3></Street3>
<City></City>
<StateProv></StateProv>
<PostalCode></PostalCode>
<Country></Country>
</ShipTo>
<Extra></Extra>
</CC5Request>
";
//Deðiþken parametrelerin XML sablona yazilmasi
        $request=str_replace("{NAME}",$name,$request);
        $request=str_replace("{PASSWORD}",$password,$request);
        $request=str_replace("{CLIENTID}",$clientid,$request);
        $request=str_replace("{IP}",$lip,$request);
        $request=str_replace("{OID}",$oid,$request);
        $request=str_replace("{TYPE}",$type,$request);
        $request=str_replace("{CCNO}",$ccno,$request);
        $request=str_replace("{CCTAR}","$ccay/$ccyil",$request);
        $request=str_replace("{CV2}","$cv2",$request);
        $request=str_replace("{TUTAR}",$tutar,$request);
        $request=str_replace("{TAKSIT}",$taksit,$request);

        
        $url = "https://spos.isbank.com.tr/servlet/cc5ApiServer";  //TEST
        $ch = curl_init();    // initialize curl handle
        curl_setopt($ch, CURLOPT_URL,$url); // set url to post to
        curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); // return into a variable
        curl_setopt($ch, CURLOPT_TIMEOUT, 90); // times out after 4s
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $request); // add POST fields
        $result = curl_exec($ch); // run the whole process

       if (curl_errno($ch)) {
           print curl_error($ch);
       } else {
           curl_close($ch);
           //echo $result;
           //returns <xml>...</xml>
       }

       $xml_oku=simplexml_load_string($result);
       $Response= $xml_oku->Response;
       $HOSTMSG = $xml_oku->HOSTMSG;
       $ErrMsg = $xml_oku->ErrMsg;
    
    
    
    
    
     
 
if($Response=="Approved"){  
    $status=20;  // onaylandı
    $payment_status=24;
}else { 
 
$status=10; 
$payment_hata = $ErrMsg.''.$HOSTMSG;
$payment_status=10;
}