如何在 Codeigniter 中返回对象而不是数组？

Question

I meet a question in Codeignter when I try to get an object return, some of controllers codes are

$sql = $this->user_model->userdetail($data);
    if ($sql) {
        echo json_encode(array(
            "status" => "0",
            "message" => "",
            "data" => $sql
    ));
    exit();
}

And the model codes are

function userdetail($data) {
    $id = $data["id"];
    $sql = "select email, name from user where id='".$id."'";
    $query = $this->db->query($sql);
    if ($query->num_rows() > 0) {
        return $query->result_array();
    }
    return $query->num_rows();
}

I can get the result

{
    "status": "0",
    "message": "",
    "data": [
    {
        "email": "lily@email.com",
        "name": "lily"
    }
    ]
}

here the data is an array, but it should be an object, the above result should like this

{
    "status": "0",
    "message": "",
    "data": {
        "email": "lily@email.com",
        "name": "lily"
    }
}

And I changed return $query->result_array(); to return $query->result_object(); in model code, but it doesn't work, what should I do here? Thanks a lot.

Answer 1

Your problem is you are using result_array() . You have to use row() instead, row() function will give you the object instead of array.

The model code:

function userdetail($data) {
    $id = $data["id"];
    $sql = "select email, name from user where id='".$id."'";
    $query = $this->db->query($sql);
    return $query->num_rows() > 0 ? $query->row() : 0;
}

Answer 2

I think I find the reason, in model

return $query->result_array(); // also can be changed to return $query->result_object(); or return $query->result();

They can return array or object, and in controller file

$sql = $this->user_model->userdetail($data);

$sql should be array or object, but actually it return a Multidimensional Arrays like this

return result() or result_object()

Array
(
    [0] => stdClass Object
        (
            [email] => lily@email.com
            [name] => lily
        )

)

return result_array()

Array
(
    [0] => Array
        (
            [email] => lily@email.com
            [name] => lily
        )

)

it's strange.

Answer 3

In codeigniter $query->result_array(); is used to return result in array Format.

To get result in object format use $query->result(); like

if ($query->num_rows() > 0) {
        return $query->result();
    }

For single row use $query->result_array()

Answer 4

Maybe you need JSON_FORCE_OBJECT in json_encode.

echo json_encode(array(
        "status" => "0",
        "message" => "",
        "data" => $sql), JSON_FORCE_OBJECT);