join in laravel eloquent

$users = DB::table('users')
            ->join('contacts', 'users.id', '=', 'contacts.user_id')
            ->join('orders', 'users.id', '=', 'orders.user_id')
            ->select('users.*', 'contacts.phone', 'orders.price')
            ->get();

$users = DB::table('users')
                    ->whereIn('id', [1, 2, 3])
                    ->get();

 $customer = DB::table('customers')
                ->join('shops', 'customers.shop_id', '=', 'shops.shop_id')
                ->where('customer_contact', $contact_no)
                ->get();

$articles = DB::table('articles')
            ->select('articles.id as articles_id')
            ->join('categories', 'articles.categories_id', '=', 'categories.id')
            ->join('users', 'articles.user_id', '=', 'user.id')
  			->where('user_id',$user_id)
            ->get();