Simple WordPress Paginator

paginator.php

<?php

/**
 * Custom pagination.
 *
 * @param integer $total Total number of pages
 * @param boolean $echo  Echo or return result?
 *
 * @return void
 * @access public
 */
function paginator($total, $echo = false)
{
    $paginator = '';

    if ($total > 1) {
        if (!$currentPage = get_query_var('paged')) {
            $currentPage = 1;
        }

        $link = get_option('permalink_structure');
        $format = empty($link) ? '&page=%#%' : 'page/%#%/';

        $paginator = paginate_links([
            'base'     => get_pagenum_link(1) .'%_%',
            'format'   => $format,
            'current'  => $currentPage,
            'total'    => $total,
            'mid_size' => 4,
            'type'     => 'plain'
        ]);
    }

    return ($echo) ? e($paginator) : $paginator;
}