codeigniter – CAPTCHA Helper – Loading this Helper

This helper is loaded using the following code:

In Controller itself(* can repeat again and again*)

$this->load->helper('captcha');

In config/autoload.php (Load only once)

$autoload['helper'] = array('captcha');

if you want to reproduce, please indicate the source:
codeigniter – CAPTCHA Helper – Loading this Helper - CodeDay