Symfony - image in response - speed, optimization

Question

I generate dynamic graphics in my controller:

• If the file does not exist (unique file name), then create the graphic and save it

• return RedirectResponse ($ url)

(3. I also tried:

    $fp = fopen($url, "rb");
    $str = stream_get_contents($fp);
    fclose($fp);

    $response = new Response($str, 200);
    $response->headers->set('Content-Type', 'image/png');
    return $response;

)

I need it to generate dynamic user panels for users [in this graph, some text will be automatically updated if some changes are made to my sites].

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           <img src="direct_url_to_png"> 

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Answer 1

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<?php
class MyClass
{
  function __construct()
  {
     $this->timer = array(
       'start' => microtime(True);
     );
   }

  function myAction()
  {
    $this->timer['startaction'] = microtime(True);

    $fp = fopen($url, "rb");
    $this->timer['startstream'] = microtime(True);
    $str = stream_get_contents($fp);
    fclose($fp);
    $this->timer['endstream'] = microtime(True);

    $response = new Response($str, 200);
    $response->headers->set('Content-Type', 'image/png');

    $this->timer['endaction'] = microtime(True);
    print_r($this->timer)
    return $response;
  }
}

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