public class SyncTask extends AsyncTask<String,Void,String> {
Context ctx;
SyncTask(Context ctx){
this.ctx=ctx;
}
@Override
protected void onPreExecute() {
    super.onPreExecute();
}

@Override
protected String doInBackground(String... params) {
    String URL = "http://vlsiptv.tk/reg.php";
    String name = params [0];
    String surname = params [1];
    String password = params [2];
    String type = params [3];
    try {
        URL url = new URL(URL);
        HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
        httpURLConnection.setRequestMethod("POST");
        httpURLConnection.setDoOutput(true);
        OutputStream OS = httpURLConnection.getOutputStream();
        BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(OS, "UTF-8"));
        String data = URLEncoder.encode("name","UTF-8")+ "=" + URLEncoder.encode(name,"UTF-8")+"&"+
                URLEncoder.encode("surname","UTF-8")+ "=" + URLEncoder.encode(surname,"UTF-8")+"&"+
                URLEncoder.encode("password","UTF-8")+ "=" + URLEncoder.encode(password,"UTF-8")+"&"+
                URLEncoder.encode("type","UTF-8")+ "=" + URLEncoder.encode(type,"UTF-8");
        bufferedWriter.write(data);
        bufferedWriter.flush();
        bufferedWriter.close();
        OS.close();
        InputStream IS = httpURLConnection.getInputStream();
        IS.close();
        return "Done!";

    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return "Error";
}


@Override
protected void onProgressUpdate(Void... values) {

    super.onProgressUpdate(values);
}

@Override
protected void onPostExecute(String result) {
    Toast.makeText(ctx,result,Toast.LENGTH_LONG).show();
}
}

type = "null";
        name = et_name.getText().toString();
        surname= et_surname.getText().toString();
        password = et_password.getText().toString();
        anhat  = (RadioButton) findViewById(R.id.radio_anhat);
        kazmakerputyun = (RadioButton) findViewById(R.id.radio_kazmakerputyun);
        masnaget = (RadioButton) findViewById(R.id.radio_masnaget);
        if(anhat.isChecked()) type="Ա";
        if(kazmakerputyun.isChecked()) type="Բ";
        if(masnaget.isChecked()) type="Գ";
        SyncTask SyncTask = new SyncTask(this);
        SyncTask.execute(name,surname,password,type);

<?php
$servername = "db4free.net";
$username = "stepvaruzhan";
$password = "qwerty1250";
$dbname = "registers";
$name =$_POST["name"];
$surname = $_POST["surname"];
$password=$_POST["password"];
$type=$_POST["type"];
$conn = new mysqli($servername, $username, $password, $dbname);
$sql = "INSERT INTO reg (name, surname, password,type) VALUES ('$name', '$surname', '$password','$type')";
    if ($conn->query($sql) === TRUE) {
   // echo "New record created successfully";
} else {
  //  echo "Error: " . $sql . "<br>" . $conn->error;
}

   $conn->close();
?>