<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>

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;
}