Return JSON array as resut - Provide Json Interface

You can do that using Symfony JsonResponse.

Exemple 1.

return new \Symfony\Component\HttpFoundation\JsonResponse($array);

Exemple 2.

use Symfony\Component\HttpFoundation\JsonResponse;

  public function get_result() {

    $output = array();

    $output[] = array('time' => date("Y-m-d H:i:s"));

    $output[] = array('result'=> "OK");

    return new JsonResponse($output);

  }