(PHP ActiveX) Refresh eBay Application Access Token

This example shows how to get a new eBay REST API access token when the original is close to expiration.

Note: This example requires Chilkat v9.5.0.80 or greater. (This example was written on 21-August-2019, before v9.5.0.80 was released. If Contact Chilkat for a pre-release if the current Chilkat version is not yet at 9.5.0.80 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

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// The previously fetched eBay access token looks like this:

// {
//   "access_token": "v^1.1#i^1# ... HwSAAA=",
//   "expires_in": 7200,
//   "refresh_token": "v^1.1#i^1# ... FXjEyODQ=",
//   "refresh_token_expires_in": 47304000,
//   "token_type": "User Access Token"
// }

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject')
$json = new COM("Chilkat.JsonObject");
$success = $json->LoadFile('qa_data/tokens/ebay-access-token.json');
if ($success == 0) {
    print 'Failed to load the existing ebay access token JSON.' . "\n";
    exit;
}

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.OAuth2')
$oauth2 = new COM("Chilkat.OAuth2");

$oauth2->TokenEndpoint = 'https://api.sandbox.ebay.com/identity/v1/oauth2/token';

// Replace these with actual values.
$oauth2->ClientId = 'EBAY_CLIENT_ID';
$oauth2->ClientSecret = 'EBAY_CLIENT_SECRET';

// Get the "refresh_token"
$oauth2->RefreshToken = $json->stringOf('refresh_token');

// Send the HTTP POST to refresh the access token..
$success = $oauth2->RefreshAccessToken();
if ($success != 1) {
    print $oauth2->LastErrorText . "\n";
    exit;
}

// Load the access token response into the JSON object 
$json->Load($oauth2->AccessTokenResponse);

// Save the new JSON access token response to a file.
// The access + refresh tokens contained in this JSON will be needed for the next refresh.
$json->EmitCompact = 0;
$json->WriteFile('qa_data/tokens/ebay-access-token.json');

print 'OAuth2 authorization granted!' . "\n";
print 'New Access Token = ' . $oauth2->AccessToken . "\n";

?>