Hi! I'm newer in codeigniter and I have searched on web an example of code captcha that works. Many examples not working, but an example maybe could work. This example is here How to add a captcha in CodeIgniter Code Example - Runnable

I want to use this example, but I don't know how to configure the files from application/config

Could you help me? If you know an example that works you could say me the address on web.

Thank you very much!