php批量更新或插入数据

 $sql = "INSERT INTO term_top (TermId,AddTime,Flag,LastUpdateTime) VALUES ";
       foreach ($term_ids as $value){
           $sql .= "($value,NOW(),'no','0000-00-00 00:00:00'),";
       }
       $sql = substr($sql,0,-1);
       $sql .= "ON DUPLICATE KEY UPDATE AddTime=VALUES(AddTime),Flag=VALUES(Flag),LastUpdateTime=VALUES(LastUpdateTime)"; 
       $term_top->query($sql);
       $this->success("Add Top Term success!");