how to encode image decoded by base64_decode, symfony - image

Question

I have a image decode by base64_decode.
I have a entity Image. This is entity consist : id and path to the file. File of image load to server by this guide http://symfony.com/doc/current/cookbook/doctrine/file_uploads.html.
How encode this string and upload file to server and upload path to database in controller.
my controller
public function updateattachmentAction()
{
$em = $this->getDoctrine()->getManager();
$photo = $em->getRepository('MyPluginBundle:Photo')->findOneById(4);
$str="";
$request = $this->container->get('request');
$image = $request->query->get('image');
// file_put_contents($photo, base64_decode($data));
// $photo->upload();
// $em->persist($photo);
// $em->flush();
$response = array("code" => 100,"success" => true);
//you can return result as JSON
return new Response(json_encode($response));
}

Answer 1

it should help DataUriNormalizer
https://symfony.com/blog/new-in-symfony-3-1-data-uri-normalizer## Heading ##
use Symfony\Component\Serializer\Normalizer\DataUriNormalizer;
$normalizer = new DataUriNormalizer();
$avatar = $normalizer->denormalize('data:image/gif;base64,R0lGODdhAQABAIAAAP///////ywAAAAAAQABAAACAkQBADs=', 'SplFileObject');
// $avatar is a SplFileObject with the GIF image contents
and this https://github.com/hshn/base64-encoded-file
use Hshn\Base64EncodedFile\HttpFoundation\File\Base64EncodedFile;
$file = new Base64EncodedFile(base64_encode($data));
$file->getPathname(); // "/path/to/file"
$file instanceof Symfony\Component\HttpFoundation\File\File; // true