join table laravel count

1DB::table('users')
2            ->join('contacts', 'users.id', '=', 'contacts.user_id')
3            ->join('orders', 'users.id', '=', 'orders.user_id')
4            ->select('users.id', 'contacts.phone', 'orders.price')
5            ->get();

1$areas = Area::select('areas.*', DB::raw('count(area_id) as connections'))
2	->leftJoin('object_areas', 'object_areas.area_id', '=', 'areas.id')
3	->groupBy('areas.id')
4	->get();

1DB::table('users')
2        ->join('contacts', function($join)
3        {
4            $join->on('users.id', '=', 'contacts.user_id')->orOn(...);
5        })
6        ->get();

1DB::table('users')
2        ->leftJoin('posts', 'users.id', '=', 'posts.user_id')
3        ->get();