Simple bootstrap 4 pagination class with average number pagination and breadcrumbs, nothing fancy just does the job
<?php
$pagination = new Pagination;
$pagination->setTotal(35);
$pagination->setCurrentPage($_GET['currentpage']);
$breadcrumbs = $pagination->showBreadCrumbs();
$pagination_pages = $pagination->showPagination();
?><html>
<head></head>
<body>
<div><?= $breadcrumbs ?></div>
<div>Great content... </div>
<div><?= $pagination_pages ?></div>
</body>
</html>