如何声明在codeigniter中不选择多个ID

我不想被选中的ID，我尝试了这个代码，但它没有工作

    $this->coredb->select("u.id, username, email, firstname, lastname, email_signature");
    $this->coredb->join("core_utypes cu", "cu.id = u.id", "left");
    $this->coredb->where("(cu.utype = 3 OR u.utype = 3)");
    $this->coredb->where("(cu.utype = 6 OR u.utype = 6)");
    $this->coredb->where("status", 1);
    $ids = ("89, 108, 49, 109, 38, 54, 87, 90, 104, 74, 99, 111, 87, 84, 94");
    $this->coredb->where("u.id NOT IN", $ids); 
    $this->coredb->order_by("u.lastassigned", "asc");
    $query = $this->coredb->get("core_users u");
    return $query->row_array();

---

如果要使用

WHERE IN

，则需要使用

->WHERE\u IN

或

->WHERE\u not\u IN

$ids = array(89, 108, 49, 109, 38, 54, 87, 90, 104, 74, 99, 111, 87, 84, 94);
$this->coredb->where_not_in("u.id", $ids); 

文件：