WordPress API Compatibility

WordPress API Compatibility

This snippet is designed to integrate seamlessly with the WordPress Shortcode API and User API. It leverages core WordPress functions to ensure compatibility across most modern WordPress environments.

Supported Versions

• WordPress: 5.0 or higher (Tested up to 6.4+)
• PHP: 7.4 or higher

Core Functions & Hooks

The script utilizes the following components of the WordPress core API:

| Component | Description | | :--- | :--- | | add_shortcode() | Registers the [user_role] shortcode within the WordPress Shortcode API. | | wp_get_current_user() | Retrieves the global WP_User object for the visitor currently viewing the page. | | is_user_logged_in() | (Recommended implementation) Checks if the visitor is authenticated before attempting to retrieve roles. |

WP_User Methods and Properties

The script interacts directly with the WP_User class. It specifically accesses the following property:

• $user->roles: An array of roles assigned to the current user.

By default, the script extracts the first element of this array to display the primary role (e.g., administrator, editor, subscriber).

Technical Usage Example

When the shortcode is processed, the internal logic executes the following API calls:

// The snippet utilizes the WP_User object to fetch roles
$current_user = wp_get_current_user();

if ( ! ( $current_user instanceof WP_User ) ) {
    return '';
}

// Accesses the public 'roles' property
$user_roles = $current_user->roles;

// Returns the primary role string
return ! empty( $user_roles ) ? $user_roles[0] : 'Guest';

Limitations & Requirements

• User Session: The script requires a valid user session to return a value. If the user is not logged in, the WP_User object will be empty or represent a "guest" state, resulting in no output unless specifically handled.
• Role Mapping: The output is the raw role "slug" (e.g., author) stored in the database, not the "Display Name" (e.g., Author).