chamilo / chamilo-lms

        $form->addText('date_diff', get_lang('Days'), true);

        $form->addRule('date_diff', 'InvalidNumber', 'numeric');

        $form->addButtonSearch(get_lang('Search'), 'submit');

        if (!isset($_GET['date_diff'])) {

            $defaults['date_diff'] = 60;

        } else {

            $defaults['date_diff'] = Security::remove_XSS($_GET['date_diff']);

        }

        $form->setDefaults($defaults);

        $form->display();

        $values = $form->exportValues();

        }

        $course_url = '';

        if (isset($_GET['cidReq']) && strlen($_GET['cidReq']) > 0) {

            $course_url = '&cidReq='.Security::remove_XSS($_GET['cidReq']);

        }

        foreach ($user_list as $uid) {

            $user_info = api_get_user_info($uid, $checkIfUserOnline = true);