How to set config file value in Laravel 5?

Whenever you need to get configuration files value then you can set using config helper in Laravel 5. In my previous post i added how to get config file value in laravel 5. If you are working on Laravel 4 then you should use Config facade for get and set value of config file. Maybe sometimes we require to set application url from app.php file or database name from database.php file so you can set this way:

Example:

config()->set('app.url','http://localhost:8000');
OR
Config::set('app.url','http://localhost:8001');