PHP查询分页的实现代码

<!-- datatables css -->
<link rel="stylesheet" type="text/css" href="http://cdn.datatables.net/1.10.15/css/jquery.datatables.css" rel="external nofollow" >
<!-- jquery -->
<script type="text/javascript" charset="utf8" src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
<!-- datatables -->
<script type="text/javascript" charset="utf8" src="http://cdn.datatables.net/1.10.15/js/jquery.datatables.js"></script>

<table id="table_id_example" class="display">
 <thead>
 <tr>
  <th>id</th>
  <th>发布时间</th>
  <th>发布ip</th>
  <th>公告内容</th>
 </tr>
 </thead>
 <tbody>
  <volist name="notice" id="vo">
   <tr>
   <td>{$vo.id}</td>
   <td>{$vo.create_time}</td>
   <td>{$vo.create_ip}</td>
   <td>{$vo.notice_content}</td>
   </tr>
  </volist>
 </tbody>
</table> 

 <script>
 $(document).ready( function () {
  $('#table_id_example').datatable();
 } );
 </script>

 public function gonggaochakan(){
 /* 公告查看
  */
 $dbnotice = m('notice');//实例化dbnotice对象
 $count  = $dbnotice->count();// 查询满足要求的总记录数
 $page  = new thinkpage($count,$count);// 实例化分页类 传入总记录数和每页显示的记录数(全部记录)
 $data = $dbnotice->order('create_time')->limit($page->firstrow.','.$page->listrows)->select();//获得所有记录
 $this->assign('notice',$data);//传给模板
 $this->show();
}