WP Define More
Adds useful definable constants which are missing from the WordPress Core
by Onni Hakala / Geniem Oy · github.com/devgeniem/wp-define-more
Install
No release zip yet. The repository archive installs, but the folder name will carry the branch suffix and updates will not flow:
wp plugin install https://github.com/devgeniem/wp-define-more/archive/refs/heads/master.zipReadme

WP Plugin: Define More
WordPress contains multiple nice options which you can set with define().
You can see good list of all them here: http://wpengineer.com/2382/wordpress-constants-overview/
This plugin adds even more stuff you can define().
Current custom definable variables
WP_UPLOADS_MAX_SIZE
WP_UPLOADS_MAX_SIZE - Set this to tell WordPress maximum uploads size. This is useful to tell /wp-admin/media.php javascript the maximum filesize in case your WordPress is running behind reverse proxy.
Example:
define('WP_UPLOADS_MAX_SIZE','10M');
WP_UPLOADS_DIR
WP_UPLOADS_DIR - Set custom directory for your uploads. This helped us to use glusterfs to synchronize only uploads folder between multiple nodes. It was too heavy process and much too unreliable to sync everything.
Example:
define('WP_UPLOADS_DIR','/var/www/uploads');
WP_UPLOADS_URL
WP_UPLOADS_URL - Set custom url for your uploads. We used this for mapping custom http://wordpress.test/uploads/ url with custom nginx root to WP_UPLOADS_DIR.
Example:
define('WP_UPLOADS_URL', WP_SITEURL . '/uploads/');