Display blob image in symfony 2 - image

Question

I need to display images stored in my database, from users in my symfony 2 application.
I've searched and I found examples such as:
Php Display Image Blob from Mysql
The line:
echo '<img src="data:image/jpeg;base64,'.base64_encode( $result['image'] ).'"/>';
It didn't worked for me.
How to return an image file and display it in user's profile or a gallery page?

Answer 1

I created this action that searches the blob data in my table: Empleado.
/**
* #Route("/employee/photo/{id}", name="zk_time_employee_photo", requirements={"id" = "\d+"}, defaults={"id" = 1})
*/
public function photoAction()
{
$request = $this->getRequest();
$workerId = $request->get('id');
if (empty($workerId))
//throw exception
$em = $this->getDoctrine()->getManager();
$repository = $em->getRepository('ZkTimeBundle:Empleado');
$photo = $repository->findPhoto($workerId);
if (empty($photo))
//throw exception
$response = new StreamedResponse(function () use ($photo) {
echo stream_get_contents($photo);
});
$response->headers->set('Content-Type', 'image/png');
return $response;
}
This part is essential (works for both formats, no matters the original format stored):
$response->headers->set('Content-Type', 'image/png');<br>
OR
$response->headers->set('Content-Type', 'image/jpeg');<br>
In order to display it I chose:
<img src="{{ asset(path('zk_time_employee_photo', {'id': employee.Id})) }}"/>
The base is the same for multiple images (carousel) or a gallery.
I hope this helps, because the web has empty results about it or not focused in Symfony2. Mainly, pure PHP.
This guys were very helpful:
Answer #1: symfony2-how-to-display-download-a-blob-field
Answer #2: symfony2-path-to-image-in-twig-template