Wp Config.php

WordPress saves every change you make to a post. If you run a large site, this can bloat your database.

// Limit post revisions to 3
define( 'WP_POST_REVISIONS', 3 );
// Or disable revisions entirely
define( 'WP_POST_REVISIONS', false );

By mastering wp-config.php, you move from being just a WordPress user to a WordPress administrator who has full control over their site's performance and security.

If you get "Fatal Error: Allowed memory size exhausted," try increasing the limit: wp config.php

define( 'WP_MEMORY_LIMIT', '256M' );

At a minimum, a valid wp-config.php must define these constants:

// Database connection details
define( 'DB_NAME', 'your_database_name' );
define( 'DB_USER', 'your_database_user' );
define( 'DB_PASSWORD', 'your_secure_password' );
define( 'DB_HOST', 'localhost' );  // often 'localhost' or a specific IP
// Unique authentication keys and salts (generated from WordPress.org API)
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 saves every change you make to a post
// Database table prefix (security through obscurity)
$table_prefix = 'wp_';
// Absolute path to WordPress directory
if ( ! defined( 'ABSPATH' ) ) 
define( 'ABSPATH', DIR . '/' );
 By mastering  wp-config
// Finally, load the WordPress engine
require_once ABSPATH . 'wp-settings.php';