Number Pagination

This code will add number pagination on the archive page on the site. Add code to the functions.php file and use:

fn_pagination();

if ( !function_exists( 'fn_pagination' ) ) {
   function fn_pagination() {       
       $prev_arrow = is_rtl() ? '>' : '<';
       $next_arrow = is_rtl() ? '<' : '>';
       
       global $wp_query;
       $total = $wp_query->max_num_pages;
       $big = 999999999; // need an unlikely integer
       if( $total > 1 )  {
            if( !$current_page = get_query_var('paged') )
                $current_page = 1;
            if( get_option('permalink_structure') ) {
                $format = 'page/%#%/';
            } else {
                $format = '&paged=%#%';
            }
           echo paginate_links(array(
               'base'          => str_replace( $big, '%#%', esc_url( get_pagenum_link( $big ) ) ),
               'format'        => $format,
               'current'       => max( 1, get_query_var('paged') ),
               'total'         => $total,
               'mid_size'      => 3,
               'type'          => 'list',
               'prev_text'     => $prev_arrow,
               'next_text'     => $next_arrow,
            ) );
       }
   }
}