PHP attendance::sanitize示例

if (xsrf_guard()) {
    init_var($_POST['btn_cancel']);
    init_var($_POST['btn_submit']);
    require 'components/query_string_standard.php';
    require 'subclasses/attendance.php';
    $dbh_attendance = new attendance();
    $object_name = 'dbh_attendance';
    require 'components/create_form_data.php';
    extract($arr_form_data);
    if ($_POST['btn_cancel']) {
        log_action('Pressed cancel button', $_SERVER['PHP_SELF']);
        redirect("listview_attendance.php?{$query_string}");
    }
    if ($_POST['btn_submit']) {
        log_action('Pressed submit button', $_SERVER['PHP_SELF']);
        $message .= $dbh_attendance->sanitize($arr_form_data)->lst_error;
        extract($arr_form_data);
        if ($dbh_attendance->check_uniqueness($arr_form_data)->is_unique) {
            //Good, no duplicate in database
        } else {
            $message = "Record already exists with the same primary identifiers!";
        }
        if ($message == "") {
            $dbh_attendance->add($arr_form_data);
            redirect("listview_attendance.php?{$query_string}");
        }
    }
}
require 'subclasses/attendance_html.php';
$html = new attendance_html();
$html->draw_header('Add Attendance', $message, $message_type);