There is an example on http://framework.zend.com/manual/en/…

// Originating request:
$captcha = new Zend_Captcha_Figlet(array(
    'name' => 'foo',
    'wordLen' => 6,
    'timeout' => 300,
));
$id = $captcha->generate();
echo $captcha->render(); //ERROR here
  // echo $captcha->render($this->view); WORKS!

it ends with: Catchable fatal error: Argument 1 passed to Zend_Captcha_Figlet::render() must be an instance of Zend_View, none given, called in demo-captcha\application\controllers\IndexController.php on line 53 and defined in Zend\Captcha\Figlet.php on line 79