//Updated Dec 2020
//laravel artisan clear cache
php artisan view:clear
php artisan cache:clear
php artisan route:clear
php artisan config:clear

php artisan optimize:clear
//This clears all laravel caches for views,application, route,configuration
// and complied services and packages

before change:
php artisan cache:clear
php artisan config:clear
php artisan route:clear
after change:
php artisan config:cache
php artisan route:cache
php artisan optimize

php artisan view:clear
php artisan cache:clear
php artisan route:clear
php artisan config:clear

//just create below route and visit it.
use Illuminate\Support\Facades\Artisan;
Route::get('/clear-cache', function () { Artisan::call('route:cache'); Artisan::call('config:cache'); Artisan::call('cache:clear'); Artisan::call('view:clear');	return 'clear';
});

//Laravel 7 / 2021-01
php artisan cache:clear
php artisan route:clear
php artisan config:clear
php artisan optimize

php artisan cache:clear
php artisan view:clear
php artisan route:clear
php artisan config:clear

 Route::get('/clear-cache', function() {
     $exitCode = Artisan::call('cache:clear');
     return 'Application cache cleared'; });

 Route::get('/route-cache', function() {
     $exitCode = Artisan::call('route:cache');
     return 'Routes cache cleared'; });