Perl

PayPal Generate QR Code

See more PayPal Examples

Generates a QR code for an invoice, by ID.

The QR code is a PNG image in Base64-encoded format that corresponds to the invoice ID.

Note: A QR code can only be generated for an invoice that has been both created and sent.

See also Generate QR Code

Perl

use chilkat();

$success = 0;

# Note: Requires Chilkat v9.5.0.64 or greater.

# This requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# Load our previously obtained access token. (see PayPal OAuth2 Access Token)
$jsonToken = chilkat::CkJsonObject->new();
$jsonToken->LoadFile("qa_data/tokens/paypal.json");

# Build the Authorization request header field value.
$sbAuth = chilkat::CkStringBuilder->new();
# token_type should be "Bearer"
$sbAuth->Append($jsonToken->stringOf("token_type"));
$sbAuth->Append(" ");
$sbAuth->Append($jsonToken->stringOf("access_token"));

# Make the initial connection.
# A single REST object, once connected, can be used for many PayPal REST API calls.
# The auto-reconnect indicates that if the already-established HTTPS connection is closed,
# then it will be automatically re-established as needed.
$rest = chilkat::CkRest->new();
$bAutoReconnect = 1;
$success = $rest->Connect("api.sandbox.paypal.com",443,1,$bAutoReconnect);
if ($success != 1) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

# ----------------------------------------------------------------------------------------------
# The code above this comment could be placed inside a function/subroutine within the application
# because the connection does not need to be made for every request.  Once the connection is made
# the app may send many requests..
# ----------------------------------------------------------------------------------------------

# Build a path using an invoice ID.
$sbPath = chilkat::CkStringBuilder->new();
$sbPath->Append("/v1/invoicing/invoices/invoice_id/qr-code");
$numReplacements = $sbPath->Replace("invoice_id","INV2-ZG2H-HKAW-PMWU-N6ZR");

$rest->AddHeader("Authorization",$sbAuth->getAsString());
# A 500x500 image results in a PNG file of approx. 4K bytes in size.
$rest->AddQueryParam("width","500");
$rest->AddQueryParam("height","500");
$rest->AddQueryParam("action","pay");

# Send the GET request and get the PNG image data as base64.
# A successful JSON response looks like this:
# {"image":"iVBORw0KGgoAA....AASUVORK5CYII="}
$sbJsonResponse = chilkat::CkStringBuilder->new();
$success = $rest->FullRequestNoBodySb("GET",$sbPath->getAsString(),$sbJsonResponse);
if ($success != 1) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

$json = chilkat::CkJsonObject->new();
$json->put_EmitCompact(0);
$json->LoadSb($sbJsonResponse);

print "Response Status Code = " . $rest->get_ResponseStatusCode() . "\r\n";

# Did we get a 200 success response?
if ($rest->get_ResponseStatusCode() != 200) {
    print $json->emit() . "\r\n";
    print "Failed." . "\r\n";
    exit;
}

# If the 200 response is received, the response body contains the PNG data.
# Save the PNG to a file.
$pngData = chilkat::CkBinData->new();
$pngData->AppendEncoded($json->stringOf("image"),"base64");
$success = $pngData->WriteFile("qa_output/paypal_qr_code.png");
if ($success == 0) {
    print "Failed to save PNG file." . "\r\n";
    exit;
}

print "Success." . "\r\n";