public static function addGroup_member($obj_Group_member)
 {
     $db = config::dbconfig();
     $obj_retresult = new returnResult();
     $obj_Group_member->MemberId = DAL_manageGroup_member::getLastGroup_memberId() + 1;
     $sql = "INSERT INTO tbl_group_member (GroupId,MemberId,MemberType,MemberDate,Description) \n\t\tVALUES (" . common::noSqlInject($obj_Group_member->GroupId) . "," . common::noSqlInject($obj_Group_member->MemberId) . "," . "'" . common::noSqlInject($obj_Group_member->MemberType) . "'" . "," . "'" . common::noSqlInject($obj_Group_member->MemberDate) . "'" . "," . "'" . common::noSqlInject($obj_Group_member->Description) . "'" . ");";
     $rs = mysql_query($sql);
     if (mysql_affected_rows() > 0) {
         $obj_retresult->type = 1;
         $obj_retresult->msg = "success";
         $obj_retresult->data = $obj_Group_member;
     } else {
         $obj_retresult->type = 0;
         $obj_retresult->msg = "failed";
     }
     return $obj_retresult;
 }