Lumen is a micro-framework written in PHP, developed by the same Laravel team for web application development. The Lumen source code is hosted on GitHub under the terms of the MIT License.
To do this, we need to enter the following command within our Lumen project: Using some concepts from Laravel, in Lumen we can create a Config folder in the root folder of our project. After creating the folder, inside it we put our database.php configuration file like this: Now, we need to register our ServiceProvider. For that, we need to go to the bootstrap folder and modify the app.php file by adding the following line: We also need to change the .env file to use the Firebird connection: Done.