Add a google recaptcha on Code igniter admin login

[realeez 0]

Hi Friends,

I am using CI 2 for my admin dashboard . My normal login page include username/password . If 3 login fail , need to show a 

captcha and make it necessary for further checking . I implemented same . But my captcha is not a good one (Not legible and not change text after continuous attempt). Please advise how i can use Google Recaptcha for same .....

 

Waiting your help.

 

Thanks,

Anes