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I want to integrate paytm payment gateway in codeigniter in my website and i have searched a lot, but i found only in PHP.I have tried with php library but while validating checksum it is not working.Can anyone suggest any library to integrate paytm.
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Form action should be to this file 'pgRedirect. php' inside PaytmKit folder. This file handle checksum and other require details and redirect to you Paytm payment page. This form auto submit by javaScript we are sending some required parameter as hidden variable like Channel ID, Industry Type and Customer ID.
I was searching for this same option today and finally had to tweak the library they provided here.
<form method="post" action="paytmpost">
Have added controller methods like below
function paytm()
{
$this->load->view('TxnTest');
}
function paytmpost()
{
header("Pragma: no-cache");
header("Cache-Control: no-cache");
header("Expires: 0");
// following files need to be included
require_once(APPPATH . "/third_party/paytmlib/config_paytm.php");
require_once(APPPATH . "/third_party/paytmlib/encdec_paytm.php");
$checkSum = "";
$paramList = array();
$ORDER_ID = $_POST["ORDER_ID"];
$CUST_ID = $_POST["CUST_ID"];
$INDUSTRY_TYPE_ID = $_POST["INDUSTRY_TYPE_ID"];
$CHANNEL_ID = $_POST["CHANNEL_ID"];
$TXN_AMOUNT = $_POST["TXN_AMOUNT"];
// Create an array having all required parameters for creating checksum.
$paramList["MID"] = PAYTM_MERCHANT_MID;
$paramList["ORDER_ID"] = $ORDER_ID;
$paramList["CUST_ID"] = $CUST_ID;
$paramList["INDUSTRY_TYPE_ID"] = $INDUSTRY_TYPE_ID;
$paramList["CHANNEL_ID"] = $CHANNEL_ID;
$paramList["TXN_AMOUNT"] = $TXN_AMOUNT;
$paramList["WEBSITE"] = PAYTM_MERCHANT_WEBSITE;
/*
$paramList["MSISDN"] = $MSISDN; //Mobile number of customer
$paramList["EMAIL"] = $EMAIL; //Email ID of customer
$paramList["VERIFIED_BY"] = "EMAIL"; //
$paramList["IS_USER_VERIFIED"] = "YES"; //
*/
//Here checksum string will return by getChecksumFromArray() function.
$checkSum = getChecksumFromArray($paramList,PAYTM_MERCHANT_KEY);
echo "<html>
<head>
<title>Merchant Check Out Page</title>
</head>
<body>
<center><h1>Please do not refresh this page...</h1></center>
<form method='post' action='".PAYTM_TXN_URL."' name='f1'>
<table border='1'>
<tbody>";
foreach($paramList as $name => $value) {
echo '<input type="hidden" name="' . $name .'" value="' . $value . '">';
}
echo "<input type='hidden' name='CHECKSUMHASH' value='". $checkSum . "'>
</tbody>
</table>
<script type='text/javascript'>
document.f1.submit();
</script>
</form>
</body>
</html>";
}
Note : paytmpost() is modified from the pgRedirect.php in their kit. The pgResponse.php could also be tweaked to a controller function to process the output from the payment gateway.
101
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