code pagination bootstrap

/*########################################################################
/////////////////////// Codigo Paginación con Bootstrap \\\\\\\\\\\\\\\\\\
##########################################################################*/

if (! function_exists('gymclub_pagination_crud')) {
    function gymclub_pagination_crud(){
        global $wp_query;
        $pages = paginate_links( [
            'format'     => '?paged=%#%',
            'current'    => max( 1, get_query_var( 'paged' ) ),
            'total'      => $wp_query->max_num_pages,
            'type'       => 'array',
            'show_all'   => false,
            'end_size'   => 3,
            'mid_size'   => 1,
            'prev_next'  => true,
            'prev_text'  => __( '<< Anterior', 'gymclub' ),
            'next_text'  => __( 'Siguiente >>', 'gymclub' ),
            'add_args'   => false
            ]
        );

        if ( is_array( $pages )) {
            $pagination = '<div class="clearfix"></div><ul class="pagination">';
            foreach ($pages as $page) {
                $pagination .= '<li class="page-item ' .(strpos($page, 'current') !== false ? 'active' : ''). '"> ' . str_replace( 'page-numbers','page-link', $page ). '</li>';
            }
            $pagination .= '</ul>';
            return $pagination;
        }
           return null;
    }
}