(PHP ActiveX) GeoOp Exchange Refresh Token for New Access Token

Demonstrates how to use the /oauth2/token endpoint to exchange it for a new access token once the current access token has expired.

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

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

// This example also assumes that OAuth2 access and refresh tokens were previously fetched.
// and saved in a JSON file.  

// First get our previously obtained refresh token.
// { .... "refresh_token":"e6dqdG....mzjpT04w==", .... }
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject')
$jsonToken = new COM("Chilkat.JsonObject");
$success = $jsonToken->LoadFile('qa_data/tokens/geoop.json');

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

// Connect to GeoOp...
$bAutoReconnect = 1;
$success = $rest->Connect('login.geoop.com',443,1,$bAutoReconnect);
if ($success != 1) {
    print $rest->LastErrorText . "\n";
    exit;
}

// Set the X-Version header.
$rest->AddHeader('X-Version','1.0');

// Provide the required form params to get the new access token
print 'refresh_token = ' . $jsonToken->stringOf('refresh_token') . "\n";
$rest->AddQueryParam('refresh_token',$jsonToken->stringOf('refresh_token'));
$rest->AddQueryParam('grant_type','refresh_token');
$rest->AddQueryParam('client_id','GEOOP-CLIENT-ID');
$rest->AddQueryParam('client_secret','GEOOP-CLIENT-SECRET');

$responseBody = $rest->fullRequestFormUrlEncoded('POST','/oauth2/token');
if ($rest->LastMethodSuccess != 1) {
    print $rest->LastErrorText . "\n";
    exit;
}

// If the response status code did not indicate success, then see what happened..
if ($rest->ResponseStatusCode != 200) {
    print 'Request Header: ' . "\n";
    print $rest->LastRequestHeader . "\n";
    print '----' . "\n";
    print 'Response StatusCode = ' . $rest->ResponseStatusCode . "\n";
    print 'Response StatusLine: ' . $rest->ResponseStatusText . "\n";
    print 'Response Header:' . "\n";
    print $rest->ResponseHeader . "\n";
    print $responseBody . "\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;
$json->Load($responseBody);

// Show the full JSON response.  It should contain the new access token...
print $json->emit() . "\n";

?>