PHP ActiveX

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

PHP ActiveX

<?php

$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 = new COM("Chilkat.JsonObject");
$jsonToken->LoadFile('qa_data/tokens/paypal.json');

// Build the Authorization request header field value.
$sbAuth = new COM("Chilkat.StringBuilder");
// 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 = new COM("Chilkat.Rest");
$bAutoReconnect = 1;
$success = $rest->Connect('api.sandbox.paypal.com',443,1,$bAutoReconnect);
if ($success != 1) {
    print $rest->LastErrorText . "\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 = new COM("Chilkat.StringBuilder");
$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 = new COM("Chilkat.StringBuilder");
$success = $rest->FullRequestNoBodySb('GET',$sbPath->getAsString(),$sbJsonResponse);
if ($success != 1) {
    print $rest->LastErrorText . "\n";
    exit;
}

$json = new COM("Chilkat.JsonObject");
$json->EmitCompact = 0;
$json->LoadSb($sbJsonResponse);

print 'Response Status Code = ' . $rest->ResponseStatusCode . "\n";

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

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

print 'Success.' . "\n";

?>