我不知道在使用Volley更新数据库时我做错了什么

Question

In my program I have ListView of rooms(only available are shown). Tapping on one of items results in showing a layout with details like price etc. Also here is a book button. If user is logged in it should book the room (update the database and set 'available' property of certain room to 0). If not, user should log in.

Everything works fine except update operation.

So, this is my PHP script, which should update database

<?php 
 if($_SERVER['REQUEST_METHOD']=='POST'){

 $id = $_POST['id'];
 $available = $_POST['available'];

//importing database connection script 
 require_once('dbConnect.php');

 //Creating sql query 
 $sql = "UPDATE room SET available = '$available' WHERE id = $id";

 //Updating database table 
 if (mysqli_query($con,$sql)) {
 echo 'Room Is Booked Successfully';
 }
 else {
 echo 'Could Not Book Room, Try Again';
 }

 //closing connection 
 mysqli_close($con);
 }

This is my android volley function:

private void update() {
        available = Integer.valueOf(0).toString();
        id = Integer.valueOf(Config.SELECTED_ITEM + 1).toString();
        StringRequest stringRequest = new StringRequest(Request.Method.POST, Config.BOOK_URL,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        Toast.makeText(DetailsActivity.this, response, Toast.LENGTH_LONG).show();
                    }
                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(DetailsActivity.this, error.getMessage(), Toast.LENGTH_LONG).show();
                    }
                }) {
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {
                Map<String, String> params = new HashMap<>();
                params.put(Config.KEY_ID, id);
                params.put(Config.KEY_AVAILABLE, available);
                return params;
            }
        };

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

Everytime I'm getting this message: Could Not Book Room, Try Again. Help me please.

Answer 1

Already solved my problem. I am so stupid. The problem was in dbConnect.php, which is connecting to users database, not to roomspar, where room table is.