function CreateCourse(&$arg) { $course = new CourseTbl(); $course->detail = $_POST; global $login_uid; $course->detail['owner'] = $login_uid; if (trim($course->detail['name']) == "") { error("Course name can't be empty"); } if ($course->Add()) { MsgAndRedirect("courses.php", "Course has been created."); } else { MsgAndBack("Can't create course"); } }