Go into the "application/configs" folder and create a new file called application.ini. We will need this configuration file to setup some default values for our application. We will see in the next tutorial how the index.php loads this file and passes its values to the application class to create an instance.
As you can see below we have three parts in our configuration file, a config setp for the production environment. Another for the testing environment which inherits the values set for the production mode but changes some values. Finally a setup for the development environment which inherits the values from testing mode (and therefore also from production mode) but also changes some values.