<?php
$con = mysqli_connect("localhost" , "root" , "pass" , "databasename");

$name = $_POST["Name"];
$email = $_POST["Email"];
$username = $_POST["Username"];
$password = $_POST["Password"];


$insertquery = mysqli_prepare($con , "INSERT INTO contacts ( Name ,Email,Username,Password) VALUES (?,?,?,?)");
mysqli_stmt_bind_param($insertquery , "ssss" , $name , $email , $username , $password);
mysqli_stmt_execute($insertquery);


mysqli_stmt_close($insertquery);

mysqli_close($con);?>

public class ServerRequests {
ProgressDialog progressDialog;
public static final int CONNECTION_TIMEOUT = 15000;
public static final String SERVER_ADDRESS = "http://10.0.2.2/";
/*

       Some code here

*/
        HttpParams httpRequestParams = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(httpRequestParams , CONNECTION_TIMEOUT);
        HttpConnectionParams.setSoTimeout(httpRequestParams , CONNECTION_TIMEOUT);

        HttpClient client = new DefaultHttpClient(httpRequestParams);
        HttpPost post = new HttpPost(SERVER_ADDRESS + "Register.php");

        /*HttpPost post = new HttpPost("http://10.0.2.2/Sites/phpmyadmin/Register.php");*/

        try {
            post.setEntity(new UrlEncodedFormEntity(data_to_send));
            client.execute(post);
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }

        return null;
    }

    @Override
    protected void onPostExecute(Void aVoid) {
        progressDialog.dismiss();
        callback.done(null);

        super.onPostExecute(aVoid);
    }
}