从 codeigniter 查询的数组结果中删除行

Question

我在 codeigniter 中执行下面的查询，返回 4 行：

$available_rooms = $this->db->query("SELECT id_room as id, ea_rooms.name as name FROM ea_rooms_services WHERE id_service =" . $service_id)->result_array();

输出例如：

 {
{id:1, name:a}
{id:2, name:b}
{id:3, name:c}
{id:4, name:d}
}

我有一个房间 ID 为 $occupiedRooms（例如 {0=>1, 1=>2}）的数组，其填充方式如下：

$occupiedRooms = array();

foreach ($listing as $element){
... SOMECODE
    if ($id_room != null)
         $occupiedRooms[] = $id_room;
}

我想取消设置$available_rooms 中与$occupiedRooms 中具有相同ID 的所有行。

预期输出：

 {
{id:3, name:c}
{id:4, name:d}
}

我正在使用下面的代码，但它不起作用

foreach ($available_rooms as $elementKey => $element){
    if(in_array($element['id'], $occupiedRooms)){
       unset($available_rooms[$elementKey]);
    }
}

我也用下面的代码尝试了array_filter，但它也没有用：

foreach ($occupiedRooms as $id){
    $available_rooms = array_filter($available_rooms, function($room) use($id)
        {
             return $room['id'] != $id;
        });
}

Answer 1

这会更短：

$occupied_rooms = array(1,5,6);

$available_rooms = $this->db->query("SELECT id_room as id, ea_rooms.name as name FROM ea_rooms_services WHERE id_service =" . $service_id . " AND id_room NOT IN ( " . implode(",", $occupied_rooms) . " ) ")->result_array();