private void uploadImage(){
    //Showing the progress dialog
    final ProgressDialog loading = ProgressDialog.show(this, "Uploading...", "Please wait...", false, false);
    StringRequest stringRequest = new StringRequest(Request.Method.POST, UPLOAD_URL,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String s) {
                    //Disimissing the progress dialog
                    loading.dismiss();
                    //Showing toast message of the response
                    Toast.makeText(MainActivity.this, "uploaded" , Toast.LENGTH_LONG).show();
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError volleyError) {
                    //Dismissing the progress dialog
                    loading.dismiss();

                    //Showing toast
                    Toast.makeText(MainActivity.this, volleyError.getMessage().toString(), Toast.LENGTH_LONG).show();
                }
            }){
        @Override
        protected Map<String, String> getParams() throws AuthFailureError {
            //Converting Bitmap to String
            String image = getStringImage(bitmap);

            //Getting Image Name
            String name = editTextName.getText().toString().trim();

            //Creating parameters
            Map<String,String> params = new Hashtable<String, String>();

            //Adding parameters
            params.put(KEY_IMAGE, image);
            params.put(KEY_NAME, "name");

            //returning parameters
            return params;
        }
    };

    //Creating a Request Queue
    RequestQueue requestQueue = Volley.newRequestQueue(this);

    //Adding request to the queue
    requestQueue.add(stringRequest);
}

<?php

    $host="localhost"; //replace with database hostname
    $username="root"; //replace with database username
    $password=""; //replace with database password
    $db_name="mydb"; //replace with database name

    $con=mysql_connect($host,$username,$password);
    $db=mysql_select_db($db_name);

    $name = $_REQUEST['name']; //image name
    $image = $_REQUEST['image']; //image in string format
    $user=$_REQUEST['User_ID'];

    $decodedImage = base64_decode($image);
    $image_file=time().rand(1111,9999);
    $name=$name.$image_file;

    $base_path='/var/www/html/uploads/';
    file_put_contents($base_path.$name.".jpg", $decodedImage);

    mysql_query("INSERT into `image`(`img`,`User_ID`,`date`) values ('".$image_file.".jpg','$user',now() )");
    echo mysql_insert_id();

?>