Wordpress helper: Show pagination

show_pagination.php

<?php

/**
 * show_pagination
 *
 * Show pagination links.
 *
 * @author JoseRobinson.com
 * @link https://gist.github.com/jrobinsonc/bb3829f9418d37c02a09
 * @version 2.0.0
 * @param object $custom_query An instance of the WP_Query class
 * @param string $container HTML container for the pagination links
 * @param array $config See https://codex.wordpress.org/Function_Reference/paginate_links
 * @return void
 */
function show_pagination($custom_query = null, $container = '<div class="pagination-box">%s</div>', $config = array())
{
    if (null === $custom_query)
        global $wp_query;
    else
        $wp_query = $custom_query;


    $big = 999999999;

    $pagination_array = array_merge(array(
        'base' => str_replace($big, '%#%', esc_url(get_pagenum_link($big))),
        'format' => '?paged=%#%',
        'current' => max(1, absint(get_query_var('paged'))),
        'total' => $wp_query->max_num_pages,
        // 'prev_text' => __('« Atras'),
        // 'next_text' => __('Siguiente »')
    ), $config);

    $pagination = paginate_links($pagination_array);

    if (is_null($pagination)) 
        return;

    printf($container, $pagination);
}