how to log in controller laravel code example

Example 1: get id user login laravel

use Auth;
$user_id = Auth::user()->id;

Example 2: laravel logger

use Monolog\Logger;

$orderLog = new Logger('order');
$orderLog->pushHandler(new StreamHandler(storage_path('logs/mylogs.log')), Logger::INFO);
$orderLog->info("Order id: ${orderId}");