where month year laravel code example

Example 1: get year in laravel 8

{{ now()->year }}

Example 2: where year month laravel

$q->whereDay('created_at', '=', date('d'));
$q->whereMonth('created_at', '=', date('m'));
$q->whereYear('created_at', '=', date('Y'));

Example 3: laravel eloquent get 3 months

$dateS = Carbon::now()->startOfMonth()->subMonth(3);
$dateE = Carbon::now()->startOfMonth(); 
$TotalSpent = DB::table('orders')
->select('total_cost','placed_at')
->whereBetween('placed_at',[$dateS,$dateE])
->where(['deleted' => '0', 'delivery_address_id' => $DeliveryAddress->id])
->sum('total_cost');