WordPress at a glance
function is not described

wp_functionality_constants() WP 3.0.0

Defines functionality related WordPress constants

No Hooks.

Return

Nothing (null).

Usage

wp_functionality_constants();

Code of wp functionality constants: wp-includes/default-constants.php VER 5.0.3

<?php
function wp_functionality_constants() {
	/**
	 * @since 2.5.0
	 */
	if ( !defined( 'AUTOSAVE_INTERVAL' ) )
		define( 'AUTOSAVE_INTERVAL', 60 );

	/**
	 * @since 2.9.0
	 */
	if ( !defined( 'EMPTY_TRASH_DAYS' ) )
		define( 'EMPTY_TRASH_DAYS', 30 );

	if ( !defined('WP_POST_REVISIONS') )
		define('WP_POST_REVISIONS', true);

	/**
	 * @since 3.3.0
	 */
	if ( !defined( 'WP_CRON_LOCK_TIMEOUT' ) )
		define('WP_CRON_LOCK_TIMEOUT', 60);  // In seconds
}