Amazon S3 Generate Secure Link to Object Download

require get_stylesheet_directory() .'/aws/aws-autoloader.php';
  define('AWS_KEY', 'XXXXXXX');
  define('AWS_SECRET_KEY', 'XXXXXXXXXXXXXXXXXXXXXXX');
  $credentials = new Aws\Credentials\Credentials(AWS_KEY, AWS_SECRET_KEY);
  $s3 = new Aws\S3\S3Client([
      'version'     => 'latest',
      'region'      => REGION,
      'credentials' => $credentials
  ]);
  $result = $s3->listBuckets();
  $object = 'AutoPlotter/AutoPlotter.zip';
  $secret_plans_cmd = $s3->getCommand('GetObject', ['Bucket' => 'bucket-software', 'Key' => $object]);
  $request = $s3->createPresignedRequest($secret_plans_cmd, '+2 minute');
  echo $request->getUri();