PHP 谷歌驱动器 API 创建电子表格

我需要使用谷歌驱动器 PHP API 创建电子表格，我该怎么做？我已经有代码把它放在总是得到无标题文件，当我点击它时，这里没有数据这是我的代码：

/**
* Insert new file.
*
* @param apiDriveService $service Drive API service instance.
* @param string $title Title of the file to insert, including the extension.
* @param string $description Description of the file to insert.
* @param string $parentId Parent folder's ID.
* @param string $mimeType MIME type of the file to insert.
* @param string $filename Filename of the file to insert.
* @return DriveFile The file that was inserted. NULL is returned if an API error occurred.
*/
function insertFile($service, $title, $description, $parentId, $mimeType, $data) {
$file = new DriveFile();
$file->setTitle($title);
$file->setDescription($description);
$file->setMimeType($mimeType);
// Set the parent folder.
if ($parentId != null) {
    $parentsCollectionData = new DriveFileParentsCollection();
    $parentsCollectionData->setId($parentId);
    $file->setParentsCollection(array($parentsCollectionData));
}
try {
    $createdFile = $service->files->insert($file, array(
        'data' => $data,
        'mimeType' => $mimeType,
    ));
    // Uncomment the following line to print the File ID
    // print 'File ID: %s' % $createdFile->getId();
    print_r($createdFile);
} catch (Exception $e) {
    print "An error occurred: " . $e->getMessage();
}
}
if(isset($_POST['insertFile'])){
$service = new apiDriveService($client);
insertFile($service,'Google Maps Mrakers.txt','ADD Google Map Mrakers To File',NULL,'text/plain',$_POST['data']);
exit;
}