Home  >  Article  >  Backend Development  >  PHP兑现翻页处理的类

PHP兑现翻页处理的类

WBOY
WBOYOriginal
2016-06-13 10:38:53766browse

PHP实现翻页处理的类

PHP实例源代码:PHP实现翻页处理的类

class Page{

var $CountAll; //共有纪录数
var $CountPage; //每页显示记录数
var $Link; //显示 完整的分页信息
var $ForPage; //上一页
var $NextPage; //下一页
var $FirstPage; //第一页
var $LastPage; //最后一页
var $CurrPage; //第几页
var $PageNum; //共有多少页
var $Parameter; //参数
var $LimitNum; //不是统计全部记录,而是显示部分记录,例如共有100条记录,但是只统计显示前50条

function Page($sql, $num=30){

//初始化,统计记录数
$this->CountPage = $num;
global $mysql;
$sql = base64_decode($sql);
$result = $mysql->Query($sql);
if (0 != $mysql->AffectedRows()){
$row = $mysql->FetchArray($result);
$this->CountAll = $row[0];
}
else{
$this->CountAll = 0;
}
//print "共有 $this->CountAll
";
}

function ListPage($sql, $page=0,$sql_all,$other){
//查询,定义变量,获取数据

global $mysql;
//print "sql sql
";
if (isset($this->LimitNum) && $this->CountAll > $this->LimitNum){
$this->CountAll = $this->LimitNum;
}//更新总浏览记录数

$sql_src = $sql;
//if ($page > 0){
$sql = base64_decode($sql);
$sql_all = base64_decode($sql_all);
$sql_src = $sql;
//}
//echo $sql;
if (($this->CountAll % $this->CountPage) == 0)//统计共有多少页
$pagecount = (integer)($this->CountAll/$this->CountPage);
else
$pagecount = (integer)($this->CountAll/$this->CountPage)+1;
$this->ageNum = $pagecount;
if ($page > $this->ageNum)//如果页码超过页码总数则设为最大页码
$page = $this->ageNum;
if ($page $page = 1;

if ($this->CountAll == 0)
{
$this->CurrPage = 0;
}else{
$this->CurrPage = $page;
}
$first_start = ($page-1)*$this->CountPage;
$sql = $sql." limit ".$first_start.", ".$this->CountPage;
//print "2sql
";
$result = $mysql->Query($sql);
if (0 != $mysql->AffectedRows()){
$i = 0;
while($row = $mysql->FetchArray($result)){
$array[$i] = $row;
//print "name:".$array[$i][Name]."
";
$i++;
}
}

$sql = base64_encode($sql_src);
$sql_all = base64_encode($sql_all);
if ($pagecount >1){
if($page == 1){
$nextpage = $page+1;
$forpage = 1;
$this->Link = "";
$this->NextPage = "";
$this->LastPage = "";
}
else if(($page > 1)&&($page $forpage = $page-1;
$nextpage = $page+1;
$this->Link = "";
$this->ForPage = "";
$this->NextPage = "";
$this->FirstPage = "";
$this->LastPage = "";
}
else if ($page = $pagecount){
$forpage = $page-1;
$nextpage = 1;
$this->Link = "";
$this->FirstPage = "";
$this->ForPage = "";
}
}
else{
$this->Link = ' ';
}

return $array;//$array;

}

}
/***************
使用例子

include("class.config.php");
include("class.mysql.php");
include("class.page.php");
global $mysql;
$config = new Config;
$mysql = new TDatabase($config);

$query_all = "select count(*) from user";
$page_object = new Page($query_all,20);
//new Page('统计记录个数语句',每页记录个数)
if(empty($query_page))
$query_sql = "select * from user";
//注意这里的变量名必须为 $query_sql $query_page ,因为下一页的连接参数默认为 query_sql query_page

$list = $page_object->ListPage($query_sql,$query_page);
//ListPage('没有limit的前一部分,系统自动根据补齐',察看的页数)
$page_object->Parameter = '&action=view';
//这是传送的Url 所带的其它参数,如果有就修改变量 Parameter ,系统自动将她补在后面
//显示数据
for ($i=0;$iCountPage;$i++)
print $list[$i][ID]."->".$list[$i][UserName]."
";
//返回的数据为二维哈西(关联)数组,一维为纪录的标识ID号,二维为哈西(关联)数组,取值标识建议采取用数据库中字段名的方法,例如list[0][UserName]。

//显示其他相关数据
echo $page_object->CountAll;//纪录总数
echo $page_object->CountPage;//每页显示数据个数
echo $page_object->Link;//显示完整的分页信息
echo $page_object->FirstPage;//第一页
echo $page_object->NextPage;//下一页
echo $page_object->ForPage;//上一页
echo $page_object->LastPage;//最后一页
echo $page_object->CurrPage;//第几页
echo $page_object->PageNum;//共有多少页
$mysql->DatabaseClose();
****************/

?>

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn