//————————————————————————————————————

/**
* Paging Helper
*
* Takes a number, amount per page and page number
* Returns an array with:
*    results - number of results
*    pages - the total number of pages in the result set
*    page - the current page to get results for
*    next - the next page (or null if last)
*    previous - the previous page (or null if first)
*    from - the position in the results for the page to display
*    to - the results position of the last result to display on the page
*    offset - the offset (to - from)
*
* @access     public
* @param   rows   integer   number of rows
* @param   perpage integer   rows to display per page
* @param   page   integer   current page number
* @param   url   string   the base url for the page
* @return     string
*/
function fail_pager($rows, &$perpage, &$page, $baseurl, $field, $sortdir = 0, $links = 20)
{
      $CI =& get_instance();
      $max_rows = $CI->config->item(‘limit_max_rows’);

      // get the amount we are viewing per page
      if (empty($perpage) || $perpage > $max_rows) {
        $results_per_page = $CI->config->item(‘results_per_page’);
        $perpage = $results_per_page;
      }

      // establish page we are currently on and maximum pages
      $lastpage = round($rows / $perpage);
      if ($page > $lastpage) {
        $page = $lastpage;
      } else if ($page < 1) {
        $page = 1;
      }
      $nextpage = $page + 1;
      if ($nextpage > $lastpage) {
        $nextpage = null;
      }
      $prevpage = $page - 1;
      if ($prevpage < 1) {
        $prevpage = null;
      }

      // page starts and ends at these rows in the db
      $from = ($page * $perpage) - $perpage;
      if ($from <= 0) $from = 0;
      $to = $from + $perpage - 1;

      $pager = array(
        ‘results’ => $rows,
        ‘pages’ => $lastpage,
        ‘page’ => $page,
        ‘previous’ => $prevpage,
        ‘next’ => $nextpage,
        ‘from’ => $from,
        ‘to’ => $to,
        ‘offset’ => $perpage,
        ‘baseurl’ => $baseurl,
        ‘urlpath’ => join(’/’, array($baseurl, $field, $sortdir))
      );

      $pages = array();
      $half = $links / 2;
      $c = $half;
      for ($i = $pager[‘page’]; ($i > 0 && $i > $pager[‘page’] - $half - 1); $i—) {
        $c—;
        $pages[$i] = $i;
      }
      for ($i = $pager[‘page’]; $i < ($c + $half + 1 + $pager[‘page’]) && $i < $pager[‘pages’]; $i++)
      {
        $pages[$i] = $i;
      }
      sort($pages);
      if (count($pages) > 0) {
        foreach ($pages as $k => $v) {
          $linksarray[$v] = $pager[‘urlpath’] . ‘/’ . $v . ‘/’ . $pager[‘offset’];
        }
      } else {
        for ($i = $from; $i < $to; $i++) {
          $linksarray[$i - $from] = $pager[‘urlpath’] . ‘/’ . $i - $from . ‘/’ . $pager[‘offset’];
        }
      }
      $pager[‘links’] = $linksarray;
      return $pager;
}