PHP Upload PDF to Google Drive API

I have website create in PHP. Basically its send document kind project. Docuemt store in azure I will call and send it into a azure. Now I want to send in email as well as store in Google drive.

So it should be store to drive with public access. I have create following code. Its work properly I don't want any input from user.

  $client->setAccessToken($_SESSION['accessToken']);
    $service = new Google_DriveService($client);
    $finfo = finfo_open(FILEINFO_MIME_TYPE);
    $file = new Google_DriveFile();
    foreach ($files as $file_name) {
        $file_path = 'files/'.$file_name;
        $mime_type = finfo_file($finfo, $file_path);
        $file->setTitle($file_name);
        $file->setDescription('This is a '.$mime_type.' document');
        $file->setMimeType($mime_type);
        $service->files->insert(
            $file,
            array(
                'data' => file_get_contents($file_path),
                'mimeType' => $mime_type
            )
        );
    }
    finfo_close($finfo);

I want upload from azure URL using CURL or using API. When mail send its automatically upload to drive at the same time.

from PHP Upload PDF to Google Drive API