Introduction
All of the configuration files for the Laravel framework are stored in the app/config directory. Each option in every file is documented, so feel free to look through the files and get familiar with the options available to you.
Sometimes you may need to access configuration values at run-time. You may do so using the Config class:
Accessing A Configuration Value
Config::get('app.timezone');
You may also specify a default value to return if the configuration option does not exist:
$timezone = Config::get('app.timezone', 'UTC');
Setting A Configuration Value
Notice that "dot" style syntax may be used to access values in the various files. You may also set configuration values at run-time:
Config::set('database.default', 'sqlite');
Configuration values that are set at run-time are only set for the current request, and will not be carried over to subsequent requests.
Environment Configuration
It is often helpful to have different configuration values based on the environment the application is running in. For example, you may wish to use a different cache driver on your local development machine than on the production server. It is easy to accomplish this using environment based configuration.
Simply create a folder within the config directory that matches your environment name, such as local. Next, create the configuration files you wish to override and specify the options for that environment. For example, to override the cache driver for the local environment, you would create a cache.php file inapp/config/local with the following content: