sagepay curl request - php

Question

I want to process payments through my website and wanted to use sagepay for that purpose. I have gone through the guideline for sagepay go direct integration mentioned here:
http://www.sagepay.com/sites/default/files/pdf/user_guides/sagepaydirectprotocolandintegrationguidelines_0.pdf
Now,
I have created a script made necessary changes needed for the fields to process http request. here is the code:
<?php
//extract data from the post
extract($_POST);
//set POST variables
$url = 'https://live.sagepay.com/gateway/service/vspdirect-register.vsp';
$txcode = 'prefix_' . time() . rand(0, 9999);
$fields = array(
'VPSProtocol'=>urlencode("2.23"),
'TxType'=>urlencode("PAYMENT"),
'Vendor'=>urlencode("myvendorname"),
'VendorTxCode'=>urlencode($txcode),
'Amount'=>urlencode("2.00"),
'Currency'=>urlencode("GBP"),
'Description'=>urlencode("payment for my site"),
'CardHolder'=>urlencode('DELTA'),
'CardNumber'=>urlencode(4929000000006),
'ExpiryDate'=>urlencode(1213),
'CV2'=>urlencode(123),
'CardType'=>urlencode('VISA'),
'BillingSurname'=>urlencode('surname'),
'BillingFirstnames'=>urlencode('name'),
'BillingAddress1'=>urlencode(' clifton'),
'BillingCity'=>urlencode('Bristol'),
'BillingPostCode'=>urlencode('BS82UE'),
'BillingCountry'=>urlencode('United Kingdom'),
'DeliverySurname'=>urlencode('surname'),
'DeliveryFirstnames'=>urlencode('name'),
'DeliveryAddress1'=>urlencode(' clifton'),
'DeliveryCity'=>urlencode('Bristol'),
'DeliveryPostCode'=>urlencode('bs82ue'),
'DeliveryCountry'=>urlencode('united kingdom'),
);
//url-ify the data for the POST
foreach($fields as $key=>$value) { $fields_string .= $key.'='.$value.'&'; }
rtrim($fields_string,'&');
//open connection
$ch = curl_init();
//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_POST,count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS,$fields_string);
//execute post
$result = curl_exec($ch);
print_r($result);
echo "end";
//close connection
curl_close($ch);
?>
But I am not getting any response back.. what could be the problem? Its in wamp server and non https url.

Answer 1

This code works for me. I added a few CURL functions and removed one and that did the trick.
<?php
//extract data from the post
extract($_POST);
//set POST variables
$url = 'https://live.sagepay.com/gateway/service/vspdirect-register.vsp';
$txcode = 'prefix_' . time() . rand(0, 9999);
$fields = array(
'VPSProtocol'=>urlencode("2.23"),
'TxType'=>urlencode("PAYMENT"),
'Vendor'=>urlencode("myvendorname"),
'VendorTxCode'=>urlencode($txcode),
'Amount'=>urlencode("2.00"),
'Currency'=>urlencode("GBP"),
'Description'=>urlencode("payment for my site"),
'CardHolder'=>urlencode('DELTA'),
'CardNumber'=>urlencode(4111111111111111),
'ExpiryDate'=>urlencode(1213),
'CV2'=>urlencode(123),
'CardType'=>urlencode('VISA'),
'BillingSurname'=>urlencode('surname'),
'BillingFirstnames'=>urlencode('name'),
'BillingAddress1'=>urlencode(' clifton'),
'BillingCity'=>urlencode('Bristol'),
'BillingPostCode'=>urlencode('BS82UE'),
'BillingCountry'=>urlencode('United Kingdom'),
'DeliverySurname'=>urlencode('surname'),
'DeliveryFirstnames'=>urlencode('name'),
'DeliveryAddress1'=>urlencode(' clifton'),
'DeliveryCity'=>urlencode('Bristol'),
'DeliveryPostCode'=>urlencode('bs82ue'),
'DeliveryCountry'=>urlencode('united kingdom'),
);
//url-ify the data for the POST
$fields_string = http_build_query($fields);
//open connection
$ch = curl_init();
//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_POSTFIELDS,$fields_string);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_HEADER, 0);
//execute post
$result = curl_exec($ch);
print_r($result);
echo "end";
//close connection
curl_close($ch);
?>
FYI, using http_build_query() is great for building query_strings.
$fields_string = http_build_query($fields);

Answer 2

This code will work if you add field
Crypt='Your encryption password in your account setting in sagepay test';
But it returns null string if you use curl to post and it will be redirected to
https://test.sagepay.com/gateway/service/cardselection?vpstxid={BDBF098F-9BB5-3822-8CAE-AC0645A2CC57}
if you use Http POST.
Goodluck