private void registerUser(){
StringRequest stringRequest = new StringRequest(Request.Method.POST,
 URL_LOGIN,
        new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                Toast.makeText(MainActivity.this,response,Toast.LENGTH_LONG).show();
            }
        },
        new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {


Toast.makeText(MainActivity.this,error.toString(),Toast.LENGTH_LONG).show();
            }
        }){
    @Override
    protected Map<String,String> getParams()throws AuthFailureError{
        Map<String,String> params = new HashMap<String, String>();
        Cursor cursor=db.rawQuery(selectQuery,null);
        if (cursor.moveToFirst()) {
            do {


                    //params.put("sid",cursor.getString(1));
                    params.put("code",cursor.getString(2));
                    params.put("answer", cursor.getString(3));





            } while (cursor.moveToNext());
        }


        return params;
    }

};

RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}

$answer = $_POST['answer'];
    $code = $_POST['code'];
    //$sid=$_POST['sid'];
    //$useremail = $_POST['email'];
    //$userpassword = $_POST['password'];
    $user = "root";
    $pass = "";
    $host= "localhost";
    $dbname="offlinesurvey";

    date_default_timezone_set('UTC');
    $date = date('YmdHis');
    //$name=$sid.'_'.$date;
    $con = mysqli_connect($host,$user,$pass,$dbname);


    $sql_create="CREATE TABLE   `offlinesurvey`.`lime_survey_` ( `id` INT NULL AUTO_INCREMENT ,whenadded DATETIME, `code` VARCHAR(255) NOT NULL,`answer` VARCHAR(255) NOT NULL , UNIQUE `id` (`id`)) ENGINE = MyISAM;";
    if(mysqli_query($con,$sql_create)){

    }
    else {
      "No..No";
    }
     $sql="insert into lime_survey_(whenadded,code,answer)

    (Now(),'".$code."','".$answer."');";
    if(mysqli_query($con,$sql)){
        echo  "data inserted";

    }else{
        echo "Failed";
    }