Filter / add_action to upgrade.php page
Well, the first lines of that file, not counting comments/headers, are… /** Include user install customize script. */ if ( file_exists(WP_CONTENT_DIR . ‘/install.php’) ) require (WP_CONTENT_DIR . ‘/install.php’); You could include a custom install script with the rest of your code. That seems the most straightforward approach to me. It is hard to say a … Read more