php include INewsDB class php class NewsDB implements INewsDB const DB

<?php
include 'INewsDB.class.php';

class NewsDB implements INewsDB{
 const DB_NAME = 'C:/Users/Public/OpenServer/domains/mysite.local/news.db';
 private $_db;

 public function __construct(){
  $this->_db = new SQLite3(self::DB_NAME);
 }

 public function __destruct(){
  unset($this->_db);
 }

 function saveNews($title, $category, $description, $source){
 }

 function getNews(){
 }

 function deleteNews($id){
 }
}

$news = new NewsDB();
?>