php - 将mysql数据转换为json对象

Question

I using codeigniter. I want to retrive data from database and convert it into JSON object not JSON array.I'm using following code

    public function json()
 {
        $content = $this->db->get('todolist'); //todolist table name
        $data = $content->result_array();
        echo json_encode($data);
 }

Above code is converting database into JSON array. Output

[{"todo_id":"1","todo_content":"Homework","date":"2016-05-05","iscomplete":null,"imagelink":"Lighthouse.jpg"},{"todo_id":"2","todo_content":"exam","date":"2015-04-21","iscomplete":null,"imagelink":"Desert.jpg"},{"todo_id":"3","todo_content":"Lab report","date":"2014-08-29","iscomplete":null,"imagelink":"FB_IMG_14700753538617403.jpg"}]

What will be best way to convert it into JSON object

Answer 1

Sangam try to understand the concept, check the following line:

$data = $content->result_array();    // $data is an array
echo json_encode($data);             // here you are converting it into an json object

Your $data array contains more than one index in it that's why the json object is having multiple {} inside [] ;

Answer 2

You want to json_encode($data, JSON_FORCE_OBJECT) .

The JSON_FORCE_OBJECT flag, as the name implies, forces the json output to be an object, even when it otherwise would normally be represented as an array.

Refer: PHP Array to Json Object

Answer 3

您可以使用JSON_FORCE_OBJECT查看下面的示例。

 echo json_encode($data, JSON_FORCE_OBJECT);

Answer 4

Assuming you're only getting one row back from your query.

change

echo json_encode($data);

to

echo json_encode($data[0]);