php xml实例 留言本

复制代码 代码如下:

  <?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>