understrap/inc/pagination.php

<?php
/**
 * Pagination layout.
 *
 * @package understrap
 */

    if ( ! function_exists( 'understrap_pagination' ) ) :
        function understrap_pagination($args = [], $class = 'pagination') {

            if ($GLOBALS['wp_query']->max_num_pages <= 1) return;

            $args = wp_parse_args( $args, [
                'mid_size'           => 2,
                'prev_next'          => false,
                'prev_text'          => __('&laquo;', 'understrap'),
                'next_text'          => __('&raquo;', 'understrap'),
                'screen_reader_text' => __('Posts navigation', 'understrap'),
                'type'               => 'array',
                'current'            => max( 1, get_query_var('paged') ),
            ]);

            $links     = paginate_links($args);
            $next_link = get_next_posts_page_link();
            $prev_link = get_previous_posts_page_link();

            ?>

            <nav aria-label="<?php echo $args['screen_reader_text']; ?>">
                <ul class="pagination">
                    <li class="page-item">
                        <a class="page-link" href="<?php echo esc_attr($prev_link); ?>" aria-label="<?php echo __('Previous', 'understrap'); ?>">
                            <span aria-hidden="true"><?php echo esc_attr($args['prev_text']); ?></span>
                            <span class="sr-only"><?php echo __('Previous', 'understrap'); ?></span>
                        </a>
                    </li>

                    <?php
                    $i = 1;
                        foreach ( $links as $link ) { ?>
                            <li class="page-item <?php if ($i == $args['current']) { echo active; }; ?>">
                    <?php echo str_replace( 'page-numbers', 'page-link', $link ); ?>
                            </li>

                    <?php $i++;} ?>

                    <li class="page-item">
                        <a class="page-link" href="<?php echo esc_attr($next_link); ?>" aria-label="<?php echo __('Next', 'understrap'); ?>">
                            <span aria-hidden="true"><?php echo esc_attr($args['next_text']); ?></span>
                            <span class="sr-only"><?php echo __('Next', 'understrap'); ?></span>
                        </a>
                    </li>
                </ul>
            </nav>
            <?php
        }
    endif;
?>