<?php

$servername = "localhost";
$username = "root";
$password = "";
$database = "bmb";



$conn = new mysqli($servername, $username, $password, $database);


if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}


$heroes = array();


$sql = "SELECT image FROM business"

//creating an statment with the query
$stmt = $conn->prepare($sql);

//executing that statment
$stmt->execute();

//binding results for that statment
$stmt->bind_result($id, $name);

//looping through all the records
while($stmt->fetch()){

 //pushing fetched data in an array
 $temp = [
 'id'=>$id,
 'image'=>$name
 ];

 //pushing the array inside the hero array
 array_push($heroes, $temp);
}

//displaying the data in json format
echo json_encode($heroes);
?>

and my android code is:

class GetJSON extends AsyncTask<Void, Void, String> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }


    @Override
    protected void onPostExecute(String s) {
        super.onPostExecute(s);
     //  Toast.makeText(getApplicationContext(), s, Toast.LENGTH_SHORT).show();
        try {
            loadIntoListView(s);
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

    @Override
    protected String doInBackground(Void... voids) {
        try {
            URL url = new URL(urlWebService);
            HttpURLConnection con = (HttpURLConnection) url.openConnection();
            StringBuilder sb = new StringBuilder();
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));
            String json;
            while ((json = bufferedReader.readLine()) != null) {
                sb.append(json + "n");
            }
            return sb.toString().trim();
        } catch (Exception e) {
            return null;
        }
    }
}
GetJSON getJSON = new GetJSON();
getJSON.execute();

public String[] loadIntoListView(String json) throws JSONException {
        getJSON("http://192.168.43.88/ionic_side/getdata.php");

        JSONArray jsonArray = new JSONArray(json);
        ArrayList<String> heroes = new ArrayList();
        for (int i = 0; i < 4; i++)
        {
            try{

                JSONObject obj = jsonArray.getJSONObject(i);
            heroes[i] = "http://192.168.43.88/android/images/"+obj.getString("image");


            }catch(JSONException ignore_errors){

            }
        }
        return heroes.toArray(new String[0]);
    } where i called my function:

String[] items= new String[30];
        if (ImageListFragment.this.getArguments().getInt("type") == 1){
            String s=null;
            try {
                items= loadIntoListView(s);

            } catch (JSONException e) {
                e.printStackTrace();
            } i am expecting "items" array to be string array containing data for example items[]={"http://.....x.png", "http://sddffggg.jpg"} but i am getting errors please how can i do it or please help me correct my errors