案例(登录后才可访问网站)：
<code php>
function ActivePlugin_tc_cs() {
    Add_Filter_Plugin('Filter_Plugin_Index_Begin','tc_Index_Begin');
}

function tc_Index_Begin() {
    global $zbp;
    if (!$zbp->CheckRights('admin')) {
        Redirect($zbp->host . 'zb_system/login.php');
	die();
    }
}
</code>