alphanumeric captcha in codeigneiter 4

Hi,
I want to insert a alphanumeric captcha in codeigneiter4 form , i used with successfully a google-captcha form but i want to use a alphanumeric one who change every once i refresh the page . In codeigneiter3 it was a helper function but in codeigneiter there isn't.
thanks.

https://github.com/kenjis/ci3-like-captcha

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper

https://github.com/kenjis/ci3-like-captcha


that's for codeigneiter3 that have in its guide user how to do it's easy want to use for codeigneiter4.

What do you mean?
ci3-like-captcha is framework agnostic.

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper