wp-config.php Tweaks: 15 Hidden Settings (tweakswp.com)

01-memory-limit.php

define( 'WP_MEMORY_LIMIT', '256M' );
define( 'WP_MAX_MEMORY_LIMIT', '512M' );

02-post-revisions.php

define( 'WP_POST_REVISIONS', 5 );

03-autosave-interval.php

define( 'AUTOSAVE_INTERVAL', 120 );

04-empty-trash.php

define( 'EMPTY_TRASH_DAYS', 7 );

05-disable-file-editor.php

define( 'DISALLOW_FILE_EDIT', true );

06-disable-file-mods.php

define( 'DISALLOW_FILE_MODS', true );

07-force-ssl-admin.php

define( 'FORCE_SSL_ADMIN', true );

08-auth-keys-salts.php

define( 'AUTH_KEY',         'unique-phrase-here' );
define( 'SECURE_AUTH_KEY',  'unique-phrase-here' );
define( 'LOGGED_IN_KEY',    'unique-phrase-here' );
define( 'NONCE_KEY',        'unique-phrase-here' );
define( 'AUTH_SALT',        'unique-phrase-here' );
define( 'SECURE_AUTH_SALT', 'unique-phrase-here' );
define( 'LOGGED_IN_SALT',   'unique-phrase-here' );
define( 'NONCE_SALT',       'unique-phrase-here' );

09-block-external-http.php

define( 'WP_HTTP_BLOCK_EXTERNAL', true );
define( 'WP_ACCESSIBLE_HOSTS', 'api.wordpress.org,downloads.wordpress.org,*.github.com' );

10-table-prefix.php

$table_prefix = 'wp_custom_';

11-disable-wp-cron.php

define( 'DISABLE_WP_CRON', true );

12-server-cron-job.sh

*/15 * * * * wget -q -O - https://yoursite.com/wp-cron.php?doing_wp_cron > /dev/null 2>&1

13-cron-lock-timeout.php

define( 'WP_CRON_LOCK_TIMEOUT', 120 );

14-debug-configuration.php

// Production-safe debugging — log everything, display nothing
define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );
define( 'WP_DEBUG_DISPLAY', false );
define( 'SCRIPT_DEBUG', true );

// Optional: log database queries
define( 'SAVEQUERIES', true );

15-automatic-updates.php

define( 'AUTOMATIC_UPDATER_DISABLED', true );

// Or control specific update types:
define( 'WP_AUTO_UPDATE_CORE', 'minor' );

16-custom-content-dir.php

define( 'WP_CONTENT_DIR', dirname( __FILE__ ) . '/assets' );
define( 'WP_CONTENT_URL', 'https://yoursite.com/assets' );