php - json在codeigniter中编码和解码数组

Question

我在 codeigniter 中做我的项目。我的问题是我会为 'game_aspect_details' 存储值(value)以 json 格式，如
"{"game_aspect_details":[{"aspect_id":"1"},{"aspect_id":"4"}]}"
对于这个选择查询，我将解码 json 格式并在 foreach 中检查该值。

    $this->db->select('game_aspect_details');
    $this->db->from('share_reviews');
    $this->db->where('review_id',6);
    $query = $this->db->get();
    $result = $query->result();
    $test = $result[0]->game_aspect_details;
    $res = json_decode($test);
    $result_array = array();        
    foreach ($res as $row)
    {            
        $this->db->select('comments');
        $this->db->from('review_ratings');
        $this->db->where('game_aspect_id',$row->game_aspect_details); //here i need
        $query1 = $this->db->get();                            to check 1 and 4 
        $resultReviews['comments'] = $query1->result();
        $result_array[] = $resultReviews;

    }
    print_r($res);
    exit;

Answer 1

首先看看你在 $row 中得到了什么内foreach通过使用 print_r() .

我希望你需要替换下面的行

$this->db->where('game_aspect_id',$row->game_aspect_details);

与以下行:

$this->db->where('game_aspect_id',$row['aspect_id']);

如 $row是一个数组而不是一个对象。

编辑:

foreach ($res as $rows)
{            
    foreach ($rows as $row)
    {            
    ........
    $this->db->where('game_aspect_id',$row['aspect_id']); //here make change
    .....
    }
}