Codeigniter Application with LDAP Authentication

the thing is, this isn't a codeigniter problem

you can use the ldap_connect with CI 

and this is my question again
can you connect but not authenticate ?

remove the slashes in your code and see what happens

PHP Code:

if ($ldapbind) {
            echo "<pre>";
            print_r($row_login);
            exit; 


and show me your CI Code (Controller, Models etc.)