Pagination Block with Smarty and PHP

Check if pagination is needed
Display previous link if applicable
Loop through pages to display page numbers
Add ellipsis for skipped pages
Display next link if applicable

HTML

<div class="row">
  {if isset($pages) && $pages>1}
    <nav style=" text-align: center; ">
      <ul class="pagination">
        {if ((int)$page+1)-1 > 0}<li class="page-item"><a class="page-link" href="?pagina={$page-1}">← <span>Precedente</span></a></li>{/if}

        {assign var="foo" value=1}
        {for $foo=max(1, $page-5) to min($pages, $page+5)}
          <li class="page-item {if ($foo-1)==(int)$page}active{/if}"><a class="page-link" href="?pagina={$foo-1}">{$foo}</a></li>
        {/for}

        {if $foo<($pages)}
          <li class="page-item"><a class="page-link disabled" href="#">...</a></li>
          <li class="page-item"><a class="page-link" href="?pagina={$pages-1}">{$pages}</a></li>
        {/if}

        {if ((int)$page+1)+1 <= $pages}<li class="page-item"><a class="page-link" href="?pagina={(int)$page+1}"><span>Successivo</span> → </a></li>{/if}
      </ul>
    </nav>
  {/if}
</div>