php将s3内容配置设置为附件

我想将内容配置设置为s3 bucket中的附件，而

上传文件到S3桶，下面是我的代码im使用

$s3 = new S3(AWS_KEY, AWS_SECRET_KEY);

 if ($s3->putObjectFile("$uploadDir/$file", AWS_BUCKET, "$targetDir/$file", S3::ACL_PUBLIC_READ)) {
$syncSize = $s3->getObjectInfo(AWS_BUCKET, "$targetDir/$file");

}

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在php中的putobject中添加contentDisposition作为“contentDisposition”=>“附件”

$result = $client->putObject(array(
  'Bucket'     => $bucket,
  'Key'        => $fileName,
  'SourceFile' => $fileTempName,
  'ContentDisposition' => 'attachment',
  'Metadata'   => array(
    'Foo' => 'abc',
    'Baz' => '123'
  )
 ));

---

在php中的putobject中添加contentDisposition作为“contentDisposition”=>“附件”

$result = $client->putObject(array(
  'Bucket'     => $bucket,
  'Key'        => $fileName,
  'SourceFile' => $fileTempName,
  'ContentDisposition' => 'attachment',
  'Metadata'   => array(
    'Foo' => 'abc',
    'Baz' => '123'
  )
 ));