Displays numeric pagination links in WordPress

wp_numeric_pagination.php

<?php
// Displays numeric pagination links
function numeric_pagination($query = null, $echo = true) {
  if (!$query) {
    global $wp_query;
    $query = $wp_query;
  }

  $total_pages = $query->max_num_pages;
  $big = 999999999; // need an unlikely integer
  $links = null;

  if ($total_pages > 1) {
    $current_page = max(1, get_query_var('paged'));
    $links = paginate_links(array(
      'base'    => str_replace($big, '%#%', esc_url(get_pagenum_link($big))),
      'format'  => '?paged=%#%',
      'current' => $current_page,
      'total'   => $total_pages,
    ));
  }

  if ($echo) echo $links;
  return $links;
}
?>