cPanel auto login

Hello

i am new to codeigniter and really like it so much. i am trying to build one application where i want to give access to users to login to cPanel from my webpage. as i seen this in many websites already.

Here is cPanel secure login information from cPanel
https://documentation.cpanel.net/display...ote+Logins

now i find one PHP class using same function to verify login
https://gist.github.com/kmark/4440574

i am trying to get this class work with codeigniter but no luck.

i have copied bove class in application/libraries directory
then call this class from controller but i am getting error on

Code:

namespace cPanel;

i just want to know how to get this class working or any other solution for cPanel login from codeigniter function.

Thanks