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wp-config.php is one of the main files in your WordPress installation. It contains information about the database, including host, username, and password. This information allows WordPress to communicate with the database to store and retrieve data, such as posts, users, settings, etc. This information allows WordPress to communicate with the database to store and retrieve data. This file is also used to set advanced WordPress options.

When WordPress is uploaded to the server, the file wp-config.php is not present. It is the WordPress installation that creates the file based on the information provided.

Since this file contains sensitive information, it should be protected from possible hacking attempts. Find out how to do this in The ultimate guide to the .htaccess file in WordPress.