Using WordPress ‘populate_roles_260()’ PHP function
This article explains what `populate_roles_260()` is, its usage, parameters, examples, and provides tips on creating backups before and after using it in WordPress versions 2
WordPress
Using WordPress ‘populate_roles()’ PHP function
Execute WordPress role creation for the various WordPress versions.
Using WordPress ‘plugin_dir_url()’ PHP function
Get the URL directory path (with trailing slash) for the plugin __FILE__ passed in.
Using WordPress ‘plugins_api()’ PHP function
Retrieves plugin installer pages from the WordPress.org Plugins API.