Integrate open source secureimage library with CodeIgniter

Heres how:
1.) Download the open source securimage library from:
http://www.phpcaptcha.org/.

2.) Copy the library in your codeigniter’s application/library folder.

3.) Create a function in your codeigniter’s controller’s class (example index)

4.) In the view where you will place the captcha, insert this line:

site_url() – gives the base url with index.php in the end
index – controller
securimage – is the function