PHP分页设计

一、分页类设计Page.php

<?php

class Page {

public $pageSize=6;//每页显示记录数

public $rowCount;//记录总数数

public $pageNow=1;  //当前页

public $pageCount=1;  //总页数

public $navigate;   //导航

public $url;    //地址

public $firstRow;  //每页显示的第一条记录

public $rollPage;  //分栏每页显示页数

public $startNum;   //【1】

public $endNum;


public function setNav(){

$navigate="";

 //本导航的起始页

if($this->startNum>1){

$jump=$this->startNum-$this->rollPage;

//$nav=$this->url."/pageNow/$jump";

$navigate.= "<a href='{$this->url}?pageNow=$jump'><<</a>&nbsp;&nbsp;";

}

for($start=$this->startNum;$start<=$this->endNum;$start++)

{

$navigate.="<a href='{$this->url}?pageNow=$start'>[{$start}]</a>";

}

if($this->endNum<$this->pageCount)

{

$jump=$this->startNum+$this->rollPage;

$navigate.= "<a href='{$this->url}?pageNow=$jump'>>></a>&nbsp;&nbsp;";

}

$navigate.="第".$this->pageNow."页/共".$this->pageCount."页";

$this->navigate=$navigate;

}


public function setPage($url,$pageNow,$rollPage=4,$pageSize=6,){

$this->url=$url;

$this->pageNow=$pageNow;

$this->pageSize=$pageSize;

$this->rollPage=$rollPage;
}


public function setNavigate(){

$this->pageCount=ceil($this->rowCount/($this->pageSize+0.0));

$this->firstRow=($this->pageNow-1)*$this->pageSize;


$this->startNum=floor(($this->pageNow-1)/$this->rollPage)*$this->rollPage+1;

$this->endNum=$this->startNum+$this->rollPage-1;

if($this->endNum>$this->pageCount)

{

$this->endNum=$this->pageCount;

}

if($this->rowCount==0){

$this->pageNow=1;

$this->rollPage=1;

$this->firstRow=1;

$this->pageCount=1;

}

$this->setNav();  //字符串存储导航

}

}


?>

二、SqlHelper.class.php定义分页显示方法

public function excute_dql_page($sql1,$sql2,&$page){

//数据表信息分页

//sql1数据，sql2求行数

$result=mysql_query($sql1,$this->conn)or die(mysql_errno());

$arr=array();

while($row=mysql_fetch_assoc($result)){

$arr[]=$row;

}

mysql_free_result($result);

$result=mysql_query($sql2,$this->conn) or die(mysql_errno());

if($row=mysql_fetch_row($result)){

$page->rowCount=$row[0];

//实现导航条

$page->setNavigate();

}

mysql_free_result($result);

//数组存储记录集

return $arr;

}

三、UserService.class.php调用分页

<?php
     require_once 'SQLHelper.class.php';
     require_once 'User.class.php';
 
    class UserService{
      
        public function getUserListByPage(&$page){

            $sqlHelper=new SQLHelper();
            $startNum=($page->pageNow-1)*$page->pageSize;
            $sql1="select id,name from users limit $startNum,$page->pageSize";
            $sql2="select count(*) from users";
            $res=$sqlHelper->excute_dql_page($sql1, $sql2, $page);
                
            $sqlHelper->close_connect();
            
        }
    }

四、使用分页（userList.php）

<?php

header("content-type:text/html;charset=utf-8");

require_once 'SQLHelper.class.php';

require_once 'UserService.class.php';

echo"用户信息表<br/>";

echo"<table border=1 width=600px>

<tr><th>id</th><th>name</th><th>删除</th><th>修改</th></tr>";

//创建page并设置属性值

$page=new Page();

$page->url="userList.php";

$page->pageNow=1;

        

if(isset($_GET['pageNow'])){

$page->pageNow=$_GET['pageNow'];

}

//创建Service负责产生一个记录集（分页后的）

 $page->setPage($url,$pageNow);

$userService=new UserService();

$userService->getUserListByPage($fenyePage);

 

 foreach ($page->res_array as $row){

 $id=$row['id'];

 echo"<tr><td>{$row['id']}</td><td>{$row['name']}</td><td><a href='userProcess.php?action=delete&id=$id'>删除</a></td><td><a href='updateUserUI.php?id=$id'>修改</a></td></tr>";

 //print_r($row['id']);

 

 }

 echo"</table>";

 

 echo $fenyePage->navigate;

 

?>

 <form action="userList.php" method="get">

到第 <input type="text" size="1" name="pageNow" />页<input type="submit" value="确定"/>

 </form>