Copiar archivos de S3 a una instancia

        $temp_path = 'files/tasks/_temp/';
        File::isDirectory($temp_path) or File::makeDirectory($temp_path, 0777, true, true);

            $temp_path_local = $temp_path . Input::get('task_id') . "/";
            $s3 = AWS::get('s3');
            foreach (json_decode(Input::get('values')) as $file_id) {
                $file = TaskFile::find($file_id);
                $downloadPath = $temp_path_local . $file->original_filename;
                if (!file_exists($temp_path_local)) {
                    mkdir($temp_path_local, 0777, true);
                }
                $fp = fopen ($downloadPath, 'w+');
                $ch = curl_init($s3->getObjectUrl(Config::get('app.tasks_bucketname'), $file->s3_key));
                curl_setopt($ch, CURLOPT_TIMEOUT, 50);
                curl_setopt($ch, CURLOPT_FILE, $fp);
                curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
                curl_exec($ch);
                curl_close($ch);
                fclose($fp);
            }
    }