Paypal Mass Payment API NVP —

Я пытаюсь использовать Paypal Mass Payment API с этим кодом, но я не получил ответа. Не сообщение об ошибке или сообщение об успехе, просто пустой экран.

Я сохранил этот код в файл «paypal.php» и загрузил его на свой сервер. Я пытаюсь протестировать код, и если я смогу заставить его работать, я буду использовать его в WordPress, чтобы ежемесячно оплачивать преподавателям LMS.

<?php
// code modified from source: https://cms.paypal.com/cms_content/US/en_US/files/developer/nvp_MassPay_php.txt
// documentation: https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/howto_api_masspay
// sample code: https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/library_code

// eMail subject to receivers
$vEmailSubject = 'Pagamento Paypal';

/** MassPay NVP example.
*
*  Pay one or more recipients.
*/

// For testing environment: use 'sandbox' option. Otherwise, use 'live'.
// Go to www.x.com (PayPal Integration center) for more information.
$environment = 'sandbox'; // or 'beta-sandbox' or 'live'.

/**
* Send HTTP POST Request
*
* @param string The API method name
* @param string The POST Message fields in &name=value pair format
* @return array Parsed HTTP Response body
*/
function PPHttpPost($methodName_, f_)
{
global $environment;

// Set up your API credentials, PayPal end point, and API version.
// How to obtain API credentials:
// https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_api_NVPAPIBasics#id084E30I30RO
$API_UserName = urlencode('****');
$API_Password = urlencode('***');
$API_Signature = urlencode('***');
$API_Endpoint = "https://api-3t.paypal.com/nvp";
if("sandbox" === $environment || "beta-sandbox" === $environment)
{
$API_Endpoint = "https://api-3t.$environment.paypal.com/nvp";
}
$version = urlencode('51.0');

// Set the curl parameters.
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $API_Endpoint);
curl_setopt($ch, CURLOPT_VERBOSE, 1);

// Turn off the server and peer verification (TrustManager Concept).
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);

// Set the API operation, version, and API signature in the request.
$nvpreq = "METHOD=$methodName_&VERSION=$version&PWD=$API_Password&USER=$API_UserName&SIGNATURE=$API_Signature$nvpStr_";

// Set the request as a POST FIELD for curl.
curl_setopt($ch, CURLOPT_POSTFIELDS, $nvpreq);

// Get response from the server.
$httpResponse = curl_exec($ch);

if( !$httpResponse)
{
echo $methodName_ . ' failed: ' . curl_error($ch) . '(' . curl_errno($ch) .')');
}

// Extract the response details.
$httpResponseAr = explode("&", $httpResponse);

$httpParsedResponseAr = array();
foreach ($httpResponseAr as $i => $value)
{
$tmpAr = explode("=", $value);
if(sizeof($tmpAr) > 1)
{
$httpParsedResponseAr[$tmpAr[0]] = $tmpAr[1];
}
}

if((0 == sizeof($httpParsedResponseAr)) || !array_key_exists('ACK', $httpParsedResponseAr))
{
exit("Invalid HTTP Response for POST request($nvpreq) to $API_Endpoint.");
}

return $httpParsedResponseAr;
}

echo $httpParsedResponseAr;
// Set request-specific fields.
$emailSubject = urlencode($vEmailSubject);
$receiverType = urlencode('EmailAddress');
$currency = urlencode('BRL'); // or other currency ('GBP', 'EUR', 'JPY', 'CAD', 'AUD')

// Receivers
// Use '0' for a single receiver. In order to add new ones: (0, 1, 2, 3...)
// Here you can modify to obtain array data from database.
$receivers = array(
0 => array(
'receiverEmail' => "[email protected]",
'amount' => "20.00",
'uniqueID' => "id_001", // 13 chars max
'note' => " pagamento de comissão Fashiontuts"), // I recommend use of space at beginning of string.
1 => array(
'receiverEmail' => "[email protected]",
'amount' => "162.38",
'uniqueID' => "id_002", // 13 chars max, available in 'My Account/Overview/Transaction details' when the transaction is made
'note' => " pagamento de comissão fashiontuts"  // space again at beginning.
)
);
$receiversLenght = count($receivers);

// Add request-specific fields to the request string.
$nvpStr="&EMAILSUBJECT=$emailSubject&RECEIVERTYPE=$receiverType&CURRENCYCODE=$currency";

$receiversArray = array();

for($i = 0; $i < $receiversLenght; $i++)
{
$receiversArray[$i] = $receivers[$i];
}

foreach($receiversArray as $i => $receiverData)
{
$receiverEmail = urlencode($receiverData['receiverEmail']);
$amount = urlencode($receiverData['amount']);
$uniqueID = urlencode($receiverData['uniqueID']);
$note = urlencode($receiverData['note']);
$nvpStr .= "&L_EMAIL$i=$receiverEmail&L_Amt$i=$amount&L_UNIQUEID$i=$uniqueID&L_NOTE$i=$note";
}

// Execute the API operation; see the PPHttpPost function above.
$httpParsedResponseAr = PPHttpPost('MassPay', $nvpStr);

if("SUCCESS" == strtoupper($httpParsedResponseAr["ACK"]) || "SUCCESSWITHWARNING" == strtoupper($httpParsedResponseAr["ACK"]))
{
echo 'MassPay Completed Successfully: ' . $httpParsedResponseAr;
}
else
{
echo 'MassPay failed: ' . $httpParsedResponseAr;
}

?>

Переменные $ API_UserName, $ API_Password, $ API_Signature правильно указаны в исходном коде.