zf框架db类的分页示例分享

zf框架的分页示例
复制代码 代码如下:
<?php
isset($_GET["page"]) ? $page = $_GET["page"] : $page = 1;
//引入Loader类(自动加载类)
require_once("Zend/Loader.php");
//使用Loader类引入一个Db类
Zend_Loader::loadClass("Zend_Db");
//引入Zend_Db的状态器
Zend_Loader::loadClass("Zend_Db_Statement_Pdo");
//配置数据库连接信息
$Config = array("host" => "127.0.0.1" ,
    "username" => "root" ,
    "password" => "111" ,
    "dbname" => "test",
    "profiler" => "true"
    );
//告诉Zend_Db类所操作的数据库和数据库配置信息
$Db = Zend_Db::factory("PDO_Mysql" , $Config);
//执行编码语句
$Db -> query("set names utf8");
//-----------------------------------------------
//使用fetchOne()方法得出表的总条数
$Total = $Db -> fetchOne("select count(*) from gongsi");
//定义每页显示条数
$B = 50;
//得出总页数
$A = ceil($Total/$B);

//-----接下来为一系列的查询表、取结果集、分页等操作
$Select = $Db ->select();
$Select -> from("sanguo",array("s_sheng as 省份","sum(s_gongzi) as 总工资","min(s_gongzi) as 最低工资","max(s_gongzi) as 最高工资","avg(s_gongzi) as 平均工资"));
// $Select -> Where("s_gongzi>=3000");
// $Select -> Where("s_sheng="河北"");
// $Select -> order("s_sheng asc");
// $Select -> order("s_gongzi desc");
$Select -> group("s_sheng");  //分组
//$Select -> having("最高工资>10000");  //附加条件
$Select -> order("最高工资 desc");  //排序
$Select -> limit(0,0); //截取
$Select -> limitPage($page, $B); //分页
/*SQL语句相当于：
select s_sheng as 省份,sum(s_gongzi) as 最高工资 from sanguo group by s_sheng having 最高工资>10000 order by 最高工资 desc limit 0,10;
*/
$Result = $Db->fetchAll($Select);

echo "<table border="1" align="center" width="960" style="text-align:center">";
echo "<tr><th>省份</th><th>总工资</th><th>最低工资</th><th>最高工资</th><th>平均工资</th></tr>";
foreach ($Result as $key => $value)
{
 echo "<tr>";
 foreach ($value as $key2 => $value2)
 {
  echo "<td>" . $value2 . "</td>";
 }
 echo "</tr>";
}
echo "<tr>";
echo "<td colspan="5">";
echo "<a href=?page=1>首页</a>  ";
if ($page>1)
{
 echo "<a href=?page=". ($page-1) .">上页</a>  ";
}
for ($i=1; $i <=15 ; $i++)
{
 echo "<a href=?page=$i>".$i."</a>  ";
}
if ($page<$Total)
{
 echo "<a href=?page=". ($page+1) .">下页</a>  ";
}
echo "<a href=?page=" . $A .">末页</a>";
echo "</td>";
echo "</tr>";
echo "</table>";
?>