/**
 * 查询数据库并输出分页
 *
 * @param 
 * @arrange (512.笔记) jb51.cc
 **/
$db->query("SELECT COUNT(*) FROM snippets s WHERE s.user_id = '$user_id'");
 $numRecords = MysqL_result($db->result,0);
 $numPages = ceil($numRecords / $perpage);
 $page = intval($_GET['page']);
 if($page > $numPages) $page = $numPages;
 if($page < 1) $page = 1;
 $start = ($page - 1) * $perpage;
 
 $nextPage = ($page + 1 > $numPages) ? $numPages : $page + 1;
 $prevPage = ($page - 1 < 1) ? 1 : $page - 1;
 
 if($page == 1 && $numPages == 1)
  $paging = "[Page 1 of $numPages]";
 elseif($page == 1 && $numPages > 1)
  $paging = "[Page 1 of $numPages] <a href='/users/$username/page/$nextPage'>Next >></a>";
 elseif($page == $numPages)
  $paging = "<a href='/users/$username/page/$prevPage'><< Prev</a> [Page $page of $numPages]";
 else
  $paging = "<a href='/users/$username/page/$prevPage'><< Prev</a> [Page $page of $numPages] <a href='/users/$username/page/$nextPage'>Next >></a>";


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