为什么Google\u Service\u驱动器文件的属性只返回null?

$service = new Google_Service_Drive($client);

// Print the names and IDs for up to 10 files.
$optParams = array(
  'pageSize' => 10,
  'fields' => 'nextPageToken, files(id, name)'
);
$results = $service->files->listFiles($optParams);

if (count($results->getFiles()) == 0) {
  print "No files found.\n";
} else {
  print "Files:\n";
  foreach ($results->getFiles() as $file) {
    printf("%s (%s)\n", $file->getName(), $file->getId());
  }
}

代码从中删除 PHP Quickstart

除了@DalmTo所说的之外,还有一件重要的事情需要明确指出:你收到了 NULL 'fields' 作为可选参数。

id, name, kind 和 description ,开发者可以通过 properties 和 appProperties .

https://developers.google.com/drive/api/v3/properties

属性

在整个Google Drive V3文档中,“属性”一词也指 元数据 https://developers.google.com/drive/api/v3/reference/files

属性 使用PHP,但在Google Drive V3中 属性

通过修改上面的示例代码,我能够检索自定义属性。

$service = new Google_Service_Drive($client);

// Print the names, IDs and properties for up to 10 files.
$optParams = array(
  'pageSize' => 10,
  'fields' => 'nextPageToken, files(id, name, properties)'
);
$results = $service->files->listFiles($optParams);

if (count($results->getFiles()) == 0) {
  print "No files found.\n";
} else {
  print "Files:\n";
  foreach ($results->getFiles() as $file) {
    printf("%s (%s)\n", "name: ".$file->getName(), "ID: ".$file->getId());
      foreach ($file->getProperties() as $key => $value) {
        printf("%s%s\n","-key: ".$key,", value: ".$value);
    }
  }
}

属性