functions.php

<?php
/**
 */
require_once get_theme_file_path('class-list-member.php');

function addMenuMembers()
{
	add_menu_page('Memberss', 'Memberss', 'manage_options', 'customer', 'MembersHtml');
}
add_action('admin_menu', 'addMenuMembers', 1);

function MembersHtml()
{
	echo "<h2>Member</h2>";
	$memberLists = new memberLists();

	$memberLists->prepare_items();
	$memberLists->views();
	$memberLists->display();
}