Zend\Captcha component is able to manage “Completely Automated Public Turing
test to tell Computers and Humans Apart” (CAPTCHA); it is used as a challenge-response
to ensure that the individual submitting information is a human and not an
automated process. Typically, a captcha is used with form submissions where
authenticated users are not necessary, but you want to prevent spam submissions.
- File issues at https://github.com/zendframework/zend-captcha/issues
- Documentation is at http://framework.zend.com/manual/current/en/index.html#zend-captcha