The wp-config.php file is a PHP file located in the root directory of your WordPress installation. It's a configuration file that contains vital information about your WordPress site, such as database credentials, table prefix, and security settings. When you install WordPress, the wp-config.php file is created automatically, providing a default set of settings that allow your site to function.
/** MySQL hostname */ define( 'DB_HOST', 'localhost' ); wp config.php
/* That's all, stop editing! Happy blogging. */ The wp-config
// ** MySQL settings ** // /** The name of the database for WordPress */ define( 'DB_NAME', 'wordpress' ); such as database credentials
/** The Database Collate type */ define( 'DB_COLLATE', '' );