Empty menu callback

gistfile1.php

<?php
/*
NOTE: Insert into template file as usual but use fallback_cb parameter - same name as function
wp_nav_menu( array(
	'container_class' => 'primary-navigation clearfix',
	'theme_location' => 'primary-nav',
	'fallback_cb' => 'mywfx_empty_menu'
) );
*/

function mywfx_empty_menu() {
	$page_data = wp_list_pages(array(
		'post_type'    => 'page',
		'post_status'  => 'publish',
		'echo'         => 0,
		'number'       => 3,
		'title_li'     => ''
	));
	echo '<ul class="menu">';
	echo $page_data;
	echo ( current_user_can( 'manage_options' ) ) ? '<li>' . '<a href="' . admin_url( 'nav-menus.php' ) . '">' . 'Edit this menu' . '</a>' . '</li>' : '';
	echo '</ul>';
}
?>