Here's PayPal's example of the command line cURL request to their Permissions API:
curl https://svcs.sandbox.paypal.com/Permissions/GetAccessToken \
-s \
--insecure \
-H "X-PAYPAL-SECURITY-USERID: api_username" \
-H "X-PAYPAL-SECURITY-PASSWORD: api_password" \
-H "X-PAYPAL-SECURITY-SIGNATURE: api_signature" \
-H "X-PAYPAL-REQUEST-DATA-FORMAT: NV" \
-H "X-PAYPAL-RESPONSE-DATA-FORMAT: NV" \
-H "X-PAYPAL-APPLICATION-ID: app_id" \
-d requestEnvelope.errorLanguage=en_US \
-d token=token \
-d verifier=code
I attempted entering my credentials, token and verifier in the above command line cURL into my command line and received a successful response.
However when I tried with my PHP application, I am not even getting an failure response. Here's my php cURL request:
class PayPalSession
{
private $devUsername;
private $devPassword;
private $devSignature;
private $appId;
public function __construct($devUsername, $devPassword, $devSignature, $applicationId, $format)
{
$this->devUsername = $devUsername;
$this->devPassword = $devPassword;
$this->devSignature = $devSignature;
$this->applicationId = $applicationId;
$this->format = $format;
}
/** sendHttpRequest
Sends a HTTP request to the server for this session
Input: $data
Output: The HTTP Response as a String
*/
public function sendHttpRequest($data, $endpoint)
{
//build eBay headers using variables passed via constructor
$headers = $this->buildPaypalHeaders();
//initialise a CURL session
$connection = curl_init();
//set the server we are using (could be Sandbox or Production server)
curl_setopt($connection, CURLOPT_URL, $endpoint);
//stop CURL from verifying the peer's certificate
curl_setopt($connection, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($connection, CURLOPT_SSL_VERIFYHOST, 0);
//set the headers using the array of headers
curl_setopt($connection, CURLOPT_HTTPHEADER, $headers);
//set method as POST
curl_setopt($connection, CURLOPT_POST, 1);
//set the Json body of the request
curl_setopt($connection, CURLOPT_POSTFIELDS, $data);
//set it to return the transfer as a string from curl_exec
curl_setopt($connection, CURLOPT_RETURNTRANSFER, 1);
//Send the Request
$response = curl_exec($connection);
//print $response;
//close the connection
curl_close($connection);
//return the response
return $response;
}
/** buildPayPalHeaders
Generates an array of string to be used as the headers for the HTTP request to PayPal
Output: String Array of Headers applicable for this call
*/
private function buildPaypalHeaders()
{
$headers = array (
// API credentials for the API Caller account
'X-PAYPAL-SECURITY-USERID: ' . $this->devUsername,
'X-PAYPAL-SECURITY-PASSWORD: ' . $this->devPassword,
'X-PAYPAL-SECURITY-SIGNATURE: ' . $this->devSignature,
// Application ID
'X-PAYPAL-APPLICATION-ID: ' . $this->applicationId,
// Input and output formats
'X-PAYPAL-REQUEST-DATA-FORMAT : ' . $this->format,
'X-PAYPAL-RESPONSE-DATA-FORMAT : ' . $this->format,
);
return $headers;
}
}
Here are the variables that are passed in the code above:
$format = 'NV';
$endpoint = 'https://svcs.sandbox.paypal.com/Permissions/GetAccessToken'
$data = "requestEnvelope%5BerrorLanguage%5D=en_US&token=$requestToken&verifier=$verificationCode"
..and of course $requestToken
and $verifierCode
was set to what was provided to me by PayPal.
I am suspecting my problem is in my $data that I'm passing to "CURLOPT_POSTFIELDS"
. The format is supposed to be "NV" (name=value or key=value) but if you look at PayPal example "requestEnvelope.errorLanguage=en_US"
this does not look like a simple key=value pair so I am not sure how to format this for the request.
I tried this:
$requestAsArray = array('requestEnvelope' => array("errorLanguage" => "en_US"), "token" => "$requestToken", "verifier" => "$verificationCode");
$data = http_build_query($requestAsArray);
But still did not receive a response from PayPal API. I also tried sending the request as JSON and changing $format
to "JSON", but the API requires name=value/key=value requests.
Here's PayPal's documentation for this call to their API: https://developer.paypal.com/docs/classic/permissions-service/integration-guide/PermissionsUsing/
Any help would be much appreciated!
When you use the header in NVP format
'X-PAYPAL-REQUEST-DATA-FORMAT : NV'
the request array should be
$requestAsArray = array(
'requestEnvelope.errorLanguage' =>"en_US"
, "token" => "$requestToken"
, "verifier" => "$verificationCode"
);
And then use
$data = http_build_query($requestAsArray);
Whe you use the header in json format
'X-PAYPAL-REQUEST-DATA-FORMAT : JSON'
The request array should be
$requestAsArray = array(
'requestEnvelope' => array("errorLanguage" => "en_US")
, "token" => "$requestToken"
, "verifier" => "$verificationCode");
and then use
$data = json_encode($requestAsArray);
I use this methods in Paypal Adaptive Payment calls and it always works. It should work in this case too.
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