Synology: What is WordPress File wp_config.php?

What is WordPress File wp_config.php

Many people ask what is the wp-config.php file inside the main WordPress folder. This file is one of the most important core WordPress files. It contains information about the MySQL database (MariaDB 10), including the name, host (typically localhost, 127.0.0.1 or localhost:/run/mysqld/mysqld10.sock ), database username and password. This information allows WordPress to communicate with the database to store and retrieve data (e.g. Posts, Users, Settings, etc). The file is also used to define advanced options for WordPress.

The file wp-config.php does not come in the default package for WordPress. Instead, it contains a file called wp-config-sample.php which can be renamed and used as wp-config.php to install and use WordPress. When you install WordPress on Synology Nas the wp-config.php file will be automatically created.

The following shows the most important section of the wp-config file:

// ** MySQL settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define('DB_NAME', 'database_name_here');
/** MySQL database username */
define('DB_USER', 'username_here');
/** MySQL database password */
define('DB_PASSWORD', 'password_here');
/** MySQL hostname */
define('DB_HOST', 'localhost');

The remainder of the wp-config file, shown below, also has more advanced settings to configure other database elements, the security keys for your WordPress installation, and developer options. You can automatically generate a new set of security keys by visiting the WordPress API site.

/** Database Charset to use in creating database tables. */
define('DB_CHARSET', 'utf8');
/** The Database Collate type. Don't change this if in doubt. */
define('DB_COLLATE', '');
/**#@+
 * Authentication Unique Keys and Salts.
 *
 * Change these to different unique phrases!
 * You can generate these using the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org secret-key service}
 * You can change these at any point in time to invalidate all existing cookies. This will force all users to have to log in again.
 *
 * @since 2.6.0
 */
define('AUTH_KEY', 'put your unique phrase here');
define('SECURE_AUTH_KEY', 'put your unique phrase here');
define('LOGGED_IN_KEY', 'put your unique phrase here');
define('NONCE_KEY', 'put your unique phrase here');
define('AUTH_SALT', 'put your unique phrase here');
define('SECURE_AUTH_SALT', 'put your unique phrase here');
define('LOGGED_IN_SALT', 'put your unique phrase here');
define('NONCE_SALT', 'put your unique phrase here');
/**#@-*/
/**
 * WordPress Database Table prefix.
 *
 * You can have multiple installations in one database if you give each a unique
 * prefix. Only numbers, letters, and underscores please!
 */
$table_prefix = 'wp_';
/**
 * WordPress Localized Language, defaults to English.
 *
 * Change this to localize WordPress. A corresponding MO file for the chosen
 * language must be installed to wp-content/languages. For example, install
 * de_DE.mo to wp-content/languages and set WPLANG to 'de_DE' to enable German
 * language support.
 */
define('WPLANG', '');
/**
 * For developers: WordPress debugging mode.
 *
 * Change this to true to enable the display of notices during development.
 * It is strongly recommended that plugin and theme developers use WP_DEBUG
 * in their development environments.
 */
define('WP_DEBUG', false);
/* That's all, stop editing! Happy blogging. */
/** Absolute path to the WordPress directory. */
if ( !defined('ABSPATH') )
 define('ABSPATH', dirname(__FILE__) . '/');
/** Sets up WordPress vars and included files. */
require_once(ABSPATH . 'wp-settings.php');

When you install WordPress on your Synology Nas you will also need the package named MariaDB 10 and phpMyAdmin (you can download those through Package Center), which are mandatory to set username and password of your database using wp_config.php file.

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