Now that you have a fair understanding of WordPress terminology, it’s time for you to learn how WordPress works.
First, you need to understand how bootstrapping works with WordPress and then, the role of the WordPress configuration file.
Bootstrapping forms a layer of abstraction between the environment and the logic.
Now that you understand how bootstrapping works with WordPress. Take a look at the Complete WordPress Initialization Flowchart
You can learn more about how it works from the below resources –
The WordPress configuration file (wp-config.php) is one of the most important files in any WordPress installation. You should know how it works and its role in WordPress development.
wp-config.php is arguably the most important file present in the WordPress file directory because it primarily deals with WordPress security, database connection, and resource allocation.