Codeigniter，如何获取以json格式显示的数据库表数据？

Question

I have to display the result in json format. my code looks like:

 $this->db->select("*");
        $this->db->from('country');  
        $query = $this->db->get();

        foreach($query->result() as $row)
        {
            echo json_encode($row);
        } 

and the result looks like:

{"id":"1","country_name":"Australia","country_code":"61"}{"id":"2","country_name":"Bangladesh","country_code":"880"}{"id":"3","country_name":"Brazil","country_code":"55"}

I have to get this json in [] and separated by comma (,) . that is I want the result looks like:

[{"id":"1","country_name":"Australia","country_code":"61"},{"id":"2","country_name":"Bangladesh","country_code":"880"},{"id":"3","country_name":"Brazil","country_code":"55"}] 

what all changes should I done in the code.

Answer 1

Retrieve the record in array and then encode it

$result = $this->db->get('country')->result_array();
print_r(json_encode($result));

Answer 2

在模型写

return $query->result_array();

Answer 3

Use result_array() .

$this->db->select("*");
$this->db->from('country');  
$query = $this->db->get();

foreach($query->result_array() as $row)
{
   echo json_encode($row);
}