(PHP ActiveX) PayPal - Generate Invoice Number

Generates the next invoice number that is available to the user.

Note: This example requires Chilkat v9.5.0.65 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// Note: Requires Chilkat v9.5.0.65 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)
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject')
$jsonToken = new COM("Chilkat.JsonObject");
$jsonToken->LoadFile('qa_data/tokens/paypal.json');

// Build the Authorization request header field value.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$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.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Rest')
$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..
// ----------------------------------------------------------------------------------------------

// Clear the REST object of any headers or query params from previous requests.
$rest->ClearAllHeaders();
$rest->ClearAllQueryParams();

$rest->AddHeader('Authorization',$sbAuth->getAsString());

// Send the POST request with an emtpy body and get the JSON response.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sbJsonRequest = new COM("Chilkat.StringBuilder");
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sbJsonResponse = new COM("Chilkat.StringBuilder");
$success = $rest->FullRequestSb('POST','/v1/invoicing/invoices/next-invoice-number',$sbJsonRequest,$sbJsonResponse);
if ($success != 1) {
    print $rest->LastErrorText . "\n";
    exit;
}

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject')
$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;
}

// Sample JSON response is shown below.
print $json->emit() . "\n";
print '----------------------' . "\n";
print 'Next invoice number: ' . $json->stringOf('number') . "\n";
print 'success' . "\n";

// ------------------------------------------------
// A sample JSON response:

// 	{ 
// 	  "number": "0003"
// 	}

?>