I’m pleased to say that this has now been implemented as part of ACF PRO 5.11 🙌
ACF will now look for and use a PHP constant named ACF_PRO_LICENSE, which you can define with your license key.
define('ACF_PRO_LICENSE', 'yourkeyhere' );
This can be done in the wp-config.php file or any other file that WordPress runs before it loads the ACF PRO plugin. For more details, check out our guide on how to activate the ACF PRO plugin.
