laravel where creation is today carbon

1use Carbon\Carbon;
2$date = Carbon::now();
3//Get date and time
4$date->toDateTimeString();
5//Get date
6$date->toDateString();

1    $posts = Post::whereDate('created_at', Carbon::today())->get();

1$today = Carbon::now()->format('Y-m-d'); //yyyy-mm-dd etc

1$q->whereDay('created_at', '=', date('d'));
2$q->whereMonth('created_at', '=', date('m'));
3$q->whereYear('created_at', '=', date('Y'));

1$q->where('created_at', '>=', date('Y-m-d').' 00:00:00'));