Automatically refresh token using google drive api with php script

Question

I followed again THIS TUTORIAL to upload a file on Google Drive with php, directly from my REMOTE SERVER: so I have created new API Project from Google API Console, enabled

Answer 1

After messing a lot I got this to work. I am using one file/script to get the offline token and then a class to do stuff with the api:

require_once 'src/Google/autoload.php'; // load library

session_start();

$client = new Google_Client();
// Get your credentials from the console
$client->setApplicationName("Get Token");
$client->setClientId('...');
$client->setClientSecret('...');
$client->setRedirectUri('...'); // self redirect
$client->setScopes(array('https://www.googleapis.com/auth/drive.file'));
$client->setAccessType("offline");
$client->setApprovalPrompt('force'); 



if (isset($_GET['code'])) {
    $client->authenticate($_GET['code']);
    $_SESSION['token'] = $client->getAccessToken();
    $client->getAccessToken(["refreshToken"]);
    $redirect = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
    header('Location: ' . filter_var($redirect, FILTER_SANITIZE_URL));
    return;
}

if (isset($_SESSION['token'])) {
    $client->setAccessToken($_SESSION['token']);
}

if (isset($_REQUEST['logout'])) {
    unset($_SESSION['token']);
    $client->revokeToken();
}


?>


    
    
        
Get Token
        getAccessToken()) {
            $_SESSION['token'] = $client->getAccessToken();
            $token = json_decode($_SESSION['token']);
            echo "Access Token = " . $token->access_token . '
';
            echo "Refresh Token = " . $token->refresh_token . '
';
            echo "Token type = " . $token->token_type . '
';
            echo "Expires in = " . $token->expires_in . '
';
            echo "Created = " . $token->created . '
';
            echo "Logout";
            file_put_contents("token.txt",$token->refresh_token); // saving access token to file for future use
        } else {
            $authUrl = $client->createAuthUrl();
            print "Connect Me!";
        }
        ?>
    

You can load refresh token from file and use it as necessary for offline access:

class gdrive{

function __construct(){
        require_once 'src/Google/autoload.php';
        $this->client = new Google_Client();
}

function initialize(){
        echo "initializing class\n";
        $client = $this->client;
        // credentials from google console
        $client->setClientId('...');
        $client->setClientSecret('...');
        $client->setRedirectUri('...');

        $refreshToken = file_get_contents(__DIR__ . "/token.txt"); // load previously saved token
        $client->refreshToken($refreshToken);
        $tokens = $client->getAccessToken();
        $client->setAccessToken($tokens);

        $this->doSomething(); // go do something with the api       
    }
}

More here: https://github.com/yannisg/Google-Drive-Uploader-PHP