php ajax分页实现程序代码分享

时间：2015-01-23 来源：西部数据作者：西部数据

一款基于原生态的php +js +ajax 的分页程序实例,我们详细的从数据库创建到js,php,html页面的创建来告诉你如何实现ajax分页调用数据的方法.

创建数据库代码如下:

CREATE TABLE `tb_user` (

  `id` int(10) NOT NULL auto_increment,

  `username` varchar(50) NOT NULL,

  PRIMARY KEY  (`id`)

) ENGINE=MyISAM  DEFAULT CHARSET=utf8 AUTO_INCREMENT=10 ;

INSERT INTO `tb_user` VALUES (1, 'aaa');

INSERT INTO `tb_user` VALUES (2, 'bbb');

INSERT INTO `tb_user` VALUES (3, 'ccc');

INSERT INTO `tb_user` VALUES (4, 'ddd');

INSERT INTO `tb_user` VALUES (5, 'eee');

INSERT INTO `tb_user` VALUES (6, 'fff');

INSERT INTO `tb_user` VALUES (7, 'ggg');

INSERT INTO `tb_user` VALUES (8, 'hhh');

INSERT INTO `tb_user` VALUES (9, 'eee');

ajaxpage.js,代码如下:

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.getElementById(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.getElementById(obj).innerHTML="正在读取数据...";

   reobj = obj;

   send_request(url);

   }

php调用代码如下:

<title>PHP+ajax分页演示</title>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

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

<div id="result">

<?php

$terry=mysql_connect("localhost","root","")or die("连接数据库失败:".mysql_error());

mysql_select_db("ajaxtest",$terry);

mysql_query("set NAMES 'utf8'");

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

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

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

$page_size=3;

$url='index.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='';

$pagenav.="显示第<font color='red'>".($total?($pageset+1):0)."-".min($pageset+5,$total)."</font>记录 共<b><font color='yellow'>".$total."</font></b>条记录 现在是第 <b><font color='blue'>".$page."</font></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 tb_user order by id desc limit $pageset,$page_size");

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

?>

  <tr align="center">

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

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

  </tr>

<?php

}

?>

</table>

<?php

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

?>

</div>