检索API问题时，Codeigniter单引号

I added some data like these "I'm completely drunk, drunk"

And my CI web app works fine but when I retrieve APi it shows like that only..

Can you tell me how to display like this I'm completely drunk, drunk..

We can't change Android app side. Please provide a solution in the API. Piece of code for your reference..

Controller:

$allvals=$this->allmodel->videochapterslession($id,$chap);
 $this->response(array("status"=>"Success","data"=>$allvals), REST_Controller::HTTP_OK);

Model:

public function videochapterslession($id){
$this->db->select('*');
        $this->db->from('caption');
 $this->db->where('video_id',$id);
if($query->num_rows() > 0)
        {
            $row = $query->result_array();
            return $row;
        }
        else{
        return false;}
}

use html_entity_decode function

$s = 'I'm completely drunk, drunk';
echo html_entity_decode($s);