Handy user shortcodes for WordPress

wp_user_shortcodes.php

/**
 * Add current user shortcode
 */
add_shortcode( 'current-user' , 'gpc_get_current_user' );
function gpc_get_current_user() {
  $user = wp_get_current_user();
  return $user->display_name;
}

/**
 * Add logout link shortcode
 */
add_shortcode( 'logout-link', 'gpc_create_logout_link' );
function gpc_create_logout_link() {
	return '<a href="' . wp_logout_url() . '">Logout</a>';
}