谷歌驱动器 - 如何使用PHP将文件下载到本地目录

Question

我正在使用Google drive sdk。我正在使用以下代码

  $drive_service = new Google_Service_Drive($client);
  $results = $drive_service->files->listFiles();
  $items = $results->getItems();
    foreach($items as $listItem){
        $url[] = $listItem['selfLink'];
    }
    echo "<pre>"; print_r($url); exit;
   There url shows all links.