using middleware in controller laravel code example

Example 1: laravel make middleware

php artisan make:middleware CheckAge

Example 2: laravel controller middleware

class UserController extends Controller
{
    /**
     * Instantiate a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('auth');

        $this->middleware('log')->only('index');

        $this->middleware('subscribed')->except('store');
    }
}

Example 3: middleware in laravel

<?php

namespace App\Http\Middleware;

use Closure;

class CheckType
{
    public function handle($request, Closure $next)
    {
        // Perform action

        return $next($request);
    }
}