how to integrate atom payment gateway in PHP - php

Question

I am using ATOM payment gateway and YII framework. I am using following code & i am not getting response here $returnData = curl_exec($ch); its returning empty.
Please tell how can i come over it. is ther any tutorials for this integration.
$url = ‘http://203.114.240.77/paynetz/epi/fts';// test bed URL
$port = 80;
$atom_prod_id = “NSE”;
// code to generate token
$param = "&login=".$userid."&pass=".$password."&ttype=NBFundTransfer&prodid=".$atom_prod_id."&amt=".$amount."&txncurr=INR&txnscamt=0&clientcode=".$clientcode."&txnid=".$invoiceid."&date=".$today."&custacc=12345";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_PORT , $port);
curl_setopt($ch, CURLOPT_SSLVERSION,3);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_POSTFIELDS, $param);
$returnData = curl_exec($ch);
// Check if any error occured
if(curl_errno($ch))
{
echo ‘Curl error: ‘ . curl_error($ch);
}
curl_close($ch);
$xmlObj = new SimpleXMLElement($returnData);
$final_url = $xmlObj->MERCHANT->RESPONSE->url;
// eof code to generate token
// code to generate form action
$param = “”;
$param .= “&ttype=NBFundTransfer”;
$param .= “&tempTxnId=”.$xmlObj->MERCHANT->RESPONSE->param[1];
$param .= “&token=”.$xmlObj->MERCHANT->RESPONSE->param[2];
$param .= “&txnStage=1″;
$url = $url.”?”.$param;
// eof code to generate form action

Answer 1

Please check for the http response code. Are you expecting any data to be returned? You're posting data, maybe the response-body should be empty?
Please add the code below to check for the http status code.
$info = curl_getinfo($ch);
echo $info["http_code"];