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PHP实例代码:AJAX 分页显示数据

  烈火网(LieHuo.Net)教程 PHP实例代码:AJAX 分页显示数据。

调试用的文件

以下为引用的内容:
<html>
<head>
<title>烈火网提供教程LIEHUO.NET 关注站长,建设互联网!</title>
<script>
function viewpage(p){
if(window.XMLHttpRequest){
var xmlReq = new XMLHttpRequest();
} else if(window.ActiveXObject) {
var xmlReq = new ActiveXObject('Microsoft.XMLHTTP');
}
var formData = "page="+p;
xmlReq.onreadystatechange = function(){
if(xmlReq.readyState == 4){
document.getElementById('content2').innerHTML = xmlReq.responseText;
}
}
xmlReq.open("post", "Example8_7_1.php", true);
xmlReq.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xmlReq.send(formData);
return false;
}
</script>
<head>
<body onLoad="viewpage(1)">
<img src=top.gif width="100%">
<h3 align="center">数据分页显示</h3>
<div id="content2"></div>
</body>
</html>

  调用的另外一个文件 Example8_7_1.php

以下为引用的内容:
<?php
header("Content-Type:text/html;charset=GB2312");
$pagesize=10;
//echo $_POST['page'];
$db=mysql_connect("localhost","root",""); //创建数据库连接
mysql_query("set character set utf-8");
mysql_select_db("optics");
$result = mysql_query("Select count(DISTINCT articleid) FROM product");
$myrow = mysql_fetch_array($result);
$numrows=$myrow[0];
$pages=intval($numrows/$pagesize);
if ($numrows%$pagesize)
$pages++;
if (isset($_POST['page'])){
$page=intval($_POST['page']);
}
else{
//设置为第一页
$page=1;
}
$first=1;
$prev=$page-1;
$next=$page+1;
$last=$pages;
//计算记录偏移量
$offset=$pagesize*($page - 1);
//读取指定记录数

//$result=mysql_query("select `id` , count( * ) from ".book." GROUP BY `id` order by id desc limit $offset,$pagesize");
$result=mysql_query("select * from product GROUP BY `articleid` order by articleid desc limit $offset,$pagesize");
$num = @mysql_num_rows($result);

while ($row = @mysql_fetch_array($result,MYSQL_NUM)) {
$hotelname[] = $row[0];
$name[]=$row[1];
$author[]=$row[2];
$publisher[]=$row[3];
$isbn[]=$row[4];
$type[]=$row[5];
$smallpic[]=$row[6];
//$countpeople[] = $row[1];
}
echo "<TABLE style=\"MARGIN-BOTTOM: 20px\" cellSpacing=0 cellPadding=0 width=90% border=1 align=center>\n";
echo "<TBODY>\n";
echo "<th>ID编号</th><th>名称</th><th>作者</th><th>出版社</th><th>ISBN号</th><th>类型</th><th>价格</th>";
for($a=0;$a<$num;$a++)
{
echo "<TR>\n";
echo "<TD style=\"PADDING-TOP: 5px\" align=left>".$hotelname[$a]."</TD>";
echo "<TD style=\"PADDING-TOP: 5px\" align=left>".$name[$a]."</TD>";
echo "<TD style=\"PADDING-TOP: 5px\" align=left>".$author[$a]."</TD>";
echo "<TD style=\"PADDING-TOP: 5px\" align=left>".$publisher[$a]."</TD>";
echo "<TD style=\"PADDING-TOP: 5px\" align=left>".$isbn[$a]."</TD>";
echo "<TD style=\"PADDING-TOP: 5px\" align=left>".$type[$a]."</TD>";
echo "<TD style=\"PADDING-TOP: 5px\" align=left><img src=".$smallpic[$a]."></a></TD>";
echo "</TR>";
}
echo "</TR></TBODY></TABLE>\n";
echo "<TABLE style=\"MARGIN-TOP: 30px\" cellSpacing=0 cellPadding=0 width=\"100%\"";
echo "border=0>";
echo "<TBODY><TR><TD colSpan=3 height=20>";
echo "<DIV align=center>";
echo "<P align=left><FONT color=red>第".$page."页/总".$pages."页 | 总".$numrows."条</FONT> | ";
if ($page>1) echo "<a onclick=\"viewpage(".$first.")\" href='#'>首页</a> | ";
if ($page>1) echo "<a onclick=\"viewpage(".$prev.")\" href='#'>上页</a> | ";
if ($page<$pages) echo "<a onclick=\"viewpage(".$next.")\" href='#'>下页</a> | ";
if ($page<$pages) echo "<a onclick=\"viewpage(".$last.")\" href='#'>尾页</a>";
echo " 转到第 <INPUT maxLength=3 size=3 value=1 name=goto_page> 页 <INPUT hideFocus onclick=\"viewpage(document.all.goto_page.value)\" type=button value=Go name=cmd_goto>";
echo "</P></DIV></TD></TR></TBODY></TABLE>";

?>

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