php+ajax无刷新分页实例详解

本文实例讲述了php+ajax无刷新分页实现方法。分享给大家供大家参考，具体如下：

ajax_page_show_userinfo.php页面如下：

<meta 'Content:text/html;charset=utf-8'></meta>

<title>ajax分页演示</title>

<script language="javascript" src="js/ajaxpage.js"></script>

<div id="result">

<?php

$db=mysql_connect("localhost","root","123456");

mysql_select_db("register");

mysql_query("set names 'utf-8'");

$result=mysql_query("select * from user");

$total=mysql_num_rows($result) or die(mysql_error());

$page=isset($_GET['page'])?intval($_GET['page']):1;

$page_size=5;

$url='ajax_page_show_userinfo.php';

$pagenum=ceil($total/$page_size);

$page=min($pagenum,$page);

$prepage=$page-1;

$nextpage=($page==$pagenum?0:$page+1);

$pageset=($page-1)*$page_size;

$pagenav.="显示第".($total?($pageset+1):0)."-".min($pageset+5,$total)."记录 共<b>".$total."</b>条记录 现在是第 <b>".$page."</b> 页 ";

if($page<=1)

$pagenav.="<a style=cursor:not-allowed;>首页</a> ";

else

$pagenav.="<a onclick=javascript:dopage('result','$url?page=1') style=cursor:pointer;>首页</a> ";

if($prepage)

$pagenav.="<a onclick=javascript:dopage('result','$url?page=$prepage') style=cursor:pointer;>上一页</a> ";

else

$pagenav.="<a style=cursor:not-allowed;>上一页</a> ";

if($nextpage)

$pagenav.="<a onclick=javascript:dopage('result','$url?page=$nextpage') style=cursor:pointer;>下一页</a> ";

else

$pagenav.="<a style=cursor:not-allowed;>下一页</a> ";

if($pagenum)

$pagenav.="<a onclick=javascript:dopage('result','$url?page=$pagenum') style=cursor:pointer;>尾页</a> ";

else

$pagenav.="<a style=cursor:not-allowed;>尾页</a> ";

$pagenav.="共".$pagenum."页";

if($page>$pagenum){

echo "error:没有此页".$page;

exit();

}

?>

<table align="center" border="2" width="300">

<tr bgcolor="#cccccc" align="center">

<td>用户名</td>

<td>用户密码</td>

</tr>

<?php

$info=mysql_query("select * from user limit $pageset,$page_size");

while($array=mysql_fetch_array($info)){

?>

<tr align="center">

<td><?php echo $array['username'];?></td>

<td><?php echo $array['password'];?></td>

</tr>

<?php

}

?>

</table>

<?php

echo "<p align=center>$pagenav</p>";

?>

</div>

js文件下的ajaxpage.js：

var http_request=false;

function send_request(url){//初始化，指定处理函数，发送请求的函数

http_request=false;

//开始初始化XMLHttpRequest对象

if(window.XMLHttpRequest){//Mozilla浏览器

http_request=new XMLHttpRequest();

if(http_request.overrideMimeType){//设置MIME类别

http_request.overrideMimeType("text/xml");

}

}

else if(window.ActiveXObject){//IE浏览器

try{

http_request=new ActiveXObject("Msxml2.XMLHttp");

}catch(e){

try{

http_request=new ActiveXobject("Microsoft.XMLHttp");

}catch(e){}

}

}

if(!http_request){//异常，创建对象实例失败

window.alert("创建XMLHttp对象失败！");

return false;

}

http_request.onreadystatechange=processrequest;

//确定发送请求方式，URL，及是否同步执行下段代码

http_request.open("GET",url,true);

http_request.send(null);

}

//处理返回信息的函数

function processrequest(){

if(http_request.readyState==4){//判断对象状态

if(http_request.status==200){//信息已成功返回，开始处理信息

document.getElementByIdx(reobj).innerHTML=http_request.responseText;

}

else{//页面不正常

alert("您所请求的页面不正常！");

}

}

}

function dopage(obj,url){

//document.getElementByIdx(obj).innerHTML="正在读取数据...";

send_request(url);

reobj=obj;

}

希望本文所述对大家PHP程序设计有所帮助。