I think you should sanitize your input fields. Code Igniter has built in functions for XSS http://ellislab.com/codeigniter/user-guide/libraries/input.h....
$var = $this->input->post('some_data', TRUE);
268 karma · joined January 14, 2013
$var = $this->input->post('some_data', TRUE);
Don't just focus on front end skills and think you don't have to learn how it works on the backend because a frontend is just something to look at it if doesn't have the server side component.