I want user registration with Subscribe to our Aweber mailing list

Hi there,

I’m not clued up on AWeber but have had a look through the plugin. There appears to be 2 functions to have a look at:

function grab_email_from_registration()
    {
        if ($_POST['aweber_signup_checkbox'] != 1)
            return;
        if(isset($_POST['user_email'])) {
            $email = $_POST['user_email'];
            $user = $_POST['user_login'];
            $ip = ($_SERVER['X_FORWARDED_FOR']) ? $_SERVER['X_FORWARDED_FOR'] : $_SERVER['REMOTE_ADDR'];
            $options = get_option($this->widgetOptionsName);
            $sub = $this->create_subscriber($email, $ip, $options['list_id_create_subscriber'], '');
        }
    }

And

function create_subscriber($email, $ip, $list_id, $name)
    {
        $admin_options = get_option($this->adminOptionsName);
        try {
            $aweber = $this->_get_aweber_api($admin_options['consumer_key'], $admin_options['consumer_secret']);
            $account = $aweber->getAccount($admin_options['access_key'], $admin_options['access_secret']);
            $subs = $account->loadFromUrl('/accounts/' . $account->id . '/lists/' . $list_id . '/subscribers');
            return $subs->create(array(
                                    'email' => $email,
                                    'ip_address' => $ip,
                                    'name' => $name,
                                    'ad_tracking' => 'Wordpress',
                                ));
        }
        catch (Exception $exc) {
            #List ID was not in this account
            if ($exc->type === 'NotFoundError') {
                $options = get_option($this->widgetOptionsName);
                $options['list_id_create_subscriber'] = null;
                update_option($this->widgetOptionsName, $options);
            }
            #Authorization is invalid
            if ($exc->type === 'UnauthorizedError')
                $this->deauthorize();
        }
    }

I believe the best way to go about this would be to create a custom plugin that checks that the AWeber plugin exists and then rewrite the first function (as there are no hooks available to utilise it and you’d have to override the $_POST array to ensure it ran correctly). Your rewritten function would be very similar to the original but just omitting any irrelevant code.
Then you can invoke the second function (as the first does anyway) and this, I believe, will create your subscriber as the original plugin does.

To hook this functionality up at the desired time have a look at wordpress hooks that are available when a user registers. For example:
do_action( 'user_register', $user_id );

This is called whenever a new user is successfully registered.

Hope this helps some!

Regards,
Joey