title: Can an CakePHP MVC controller return an Image?
body: <p>Is it possible for cakephp controller to return an Image, basically need this for 
  captcha image generation. I tried doing it from /webroot/files/captcha_gen.php and saving the 
  code in session using .. $_SESSION["rand_code"], but for some reason, the controller
  doesnt show it in the list of session variables ..</p>