setFormApiKey('Mv83tlocuzkmfKKUFbz2s04FzTw='); $data['save-key'] = $_GET['save_path']; $data['expiration'] = time() + 120; $data['bucket'] = BUCKET; $policy = Util::base64Json($data); $method = 'POST'; $uri = '/' . $data['bucket']; $signature = Signature::getBodySignature($config, $method, $uri, null, $policy); echo json_encode(array( 'policy' => $policy, 'authorization' => $signature ));