获取s3元数据而不获取对象

Question

是否有可能从S3获取对象自定义元数据而无需获取整个对象？我查看了AWS SDK PHP 2并搜索了google和SO,没有明确的答案,或者可能只是我希望的答案.

谢谢.

Answer 1

也许这会对PHP 2有所帮助？它使用了我不熟悉的Guzzle框架.

执行HeadObject命令:HEAD操作从对象检索元数据而不返回对象本身.如果您只对对象的元数据感兴趣,则此操作非常有用.要使用HEAD,您必须具有对该对象的READ访问权限.

使用Guzzle框架的最终尝试(未经测试的代码):

use Guzzle\Service\Resource\Model
use Aws\Common\Enum\Region;
use Aws\S3\S3Client;

$client = S3Client::factory(array(
  "key" => "YOUR ACCESS KEY ID",
  "secret" => "YOUR SECRET ACCESS KEY",
  "region" => Region::US_EAST_1,
  "scheme" => "http",
));

// HEAD object
$headers = $client->headObject(array(
  "Bucket" => "your-bucket",
  "Key" => "your-key"
));
print_r($headers->toArray());

PHP 1.6.2解决方案

// Instantiate the class
$s3 = new AmazonS3();
$bucket = 'my-bucket' . strtolower($s3->key);

$response = $s3->get_object_metadata($bucket, 'üpløåd/î\'vé nøw béén üpløådéd.txt');

// Success?
var_dump($response['ContentType']);
var_dump($response['Headers']['content-language']);
var_dump($response['Headers']['x-amz-meta-ice-ice-baby']);

感谢:http://docs.aws.amazon.com/AWSSDKforPHP/latest/#m=AmazonS3/get_object_metadata

希望有所帮助!