(PHP Extension) Group: Refresh OAuth2 Access Token

Refreshes an expired or non-expired OAuth2 access token for the Microsoft Group REST API.

Note: This example requires Chilkat v11.0.0 or greater.

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<?php

include("chilkat.php");

$success = false;

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

$json = new CkJsonObject();
$success = $json->LoadFile('qa_data/tokens/msGraphGroup.json');
if ($success != true) {
    exit;
}

$req = new CkHttpRequest();
$req->AddParam('grant_type','refresh_token');
$req->AddParam('redirect_uri','http://localhost:3017/');
$req->AddParam('client_id','MICROSOFT-GRAPH-CLIENT-ID');
$req->AddParam('client_secret','MICROSOFT-GRAPH-CLIENT-SECRET');
$req->AddParam('refresh_token',$json->stringOf('refresh_token'));
$req->AddParam('scope','openid profile offline_access user.readwrite group.readwrite.all files.readwrite');

$http = new CkHttp();

$req->put_HttpVerb('POST');
$req->put_ContentType('application/x-www-form-urlencoded');

$resp = new CkHttpResponse();
$success = $http->HttpReq('https://login.microsoftonline.com/common/oauth2/v2.0/token',$req,$resp);
if ($success == false) {
    print $http->lastErrorText() . "\n";
    exit;
}

// Load the JSON response.
$json->Load($resp->bodyStr());
$json->put_EmitCompact(false);

// Show the JSON response.
print $json->emit() . "\n";

print 'Response status code: ' . $resp->get_StatusCode() . "\n";

// If the response status code is not 200, then it's an error.
if ($resp->get_StatusCode() != 200) {
    exit;
}

// Save the refreshed access token JSON to a file for future requests.
$fac = new CkFileAccess();
$fac->WriteEntireTextFile('qa_data/tokens/msGraphGroup.json',$json->emit(),'utf-8',false);

print 'Success.' . "\n";

?>