php xml实例留言本

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<?php 
//打开用于存储留言的XML文件 
$guestbook = simplexml_load_file('DB/guestbook.xml'); 

foreach($guestbook->thread as $th) //循环读取XML数据中的每一个thread标签 
{ 
echo "<B>标题：</B>".$th->title."<BR>"; 
echo "<B>作者：</B>".$th->author."<BR>"; 
echo "<B>内容：</B><PRE>".$th->content."</PRE>"; 
echo "<HR>"; 
} 
?> 

复制代码代码如下:

<?php 
$guestbook = new DomDocument(); //创建一个新的DOM对象 
$guestbook->load('DB/guestbook.xml'); //读取XML数据 
$threads = $guestbook->documentElement; //获得XML结构的根 
//创建一个新thread节点 
$thread = $guestbook->createElement('thread'); 
$threads->appendChild($thread); 
//在新的thread节点上创建title标签 
$title = $guestbook->createElement('title'); 
$title->appendChild($guestbook->createTextNode($_POST['title'])); 
$thread->appendChild($title); 
//在新的thread节点上创建author标签 
$author = $guestbook->createElement('author'); 
$author->appendChild($guestbook->createTextNode($_POST['author'])); 
$thread->appendChild($author); 
//在新的thread节点上创建content标签 
$content = $guestbook->createElement('content'); 
$content->appendChild($guestbook->createTextNode($_POST['content'])); 
$thread->appendChild($content); 
//将XML数据写入文件 
$fp = fopen("DB/guestbook.xml", "w"); 
if(fwrite($fp, $guestbook->saveXML())) 
echo "留言提交成功"; 
else 
echo "留言提交失败"; 
fclose($fp); 
?> 

复制代码代码如下:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
"http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
<head> 
<title>发表新的留言</title> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 
</head> 
<body> 
<H1><p align="center">发表新的留言</p></H1> 
<form name="form1" method="post" action="Post.php"> 
<table width="500" border="0" align="center" cellpadding="0" cellspacing="0"> 
<tr> 
<td>标题</td> 
<td><input name="title" type="text" id="title" size="50"></td> 
</tr> 
<tr> 
<td>作者</td> 
<td><input name="author" type="text" id="author" size="20"></td> 
</tr> 
<tr> 
<td>内容</td> 
<td><textarea name="content" cols="50" rows="10" id="content"></textarea></td> 
</tr> 
</table> 
<p align="center"> 
<input type="submit" value="Submit"> 
<input type="reset" value="Reset"> 
</p> 
</form> 
</body> 
</html>