天狼星

主程序guestbook.php
<?php
//==========================================
// 文件名: guestbook.php
// 说  明: 简单的XML留言簿
// power by ice_berg16
//==========================================
class guestbook extends DOMDocument
{
 public function __construct()
 {
  parent:: __construct();
  if (!file_exists("guestbook.xml"))
  {
   $xmlstr = "<?xml version=’1.0′ encoding=’GB2312′?><messageList></messageList>";
   $this->loadXML($xmlstr);
   $this->save("guestbook.xml");
  }
  else
   $this->load("guestbook.xml");
 }

 //==========================================
 // 函数: addMessage
 // 功能: 添加一条留言
 // 参数: $userName 留言人名称
 // 参数: $message 留言内容
 // 参数: $postTime 留言时间
 // 返回: 1 成功 0 失败
 //==========================================
 public function addMessage($userName, $content, $postTime)
 {
   $root    = $this->documentElement;
   //$id     = $this->getElementsByTagName("id")->length+1;
   $id = $this->getElementsByTagName("id")->lastChild->textContent+1;
   $Nid    = $this->createElement("id");
   $text    = $this->createTextNode(iconv("GB2312","UTF-8",$id));
   $Nid->appendChild($text);
   $NuserName = $this->createElement("userName");
   $text      = $this->createTextNode(iconv("GB2312","UTF-8",$userName));
   $NuserName->appendChild($text);
   $Ncontent  = $this->createElement("content");
   $text      = $this->createTextNode(iconv("GB2312","UTF-8",$content));
   $Ncontent->appendChild($text);
   $NpostTime = $this->createElement("postTime");
   $text      = $this->createTextNode(iconv("GB2312","UTF-8",$postTime));
   $NpostTime->appendChild($text);
   $Nmessage  = $this->createElement("message");
   $Nmessage->appendChild($Nid);
   $Nmessage->appendChild($NuserName);
   $Nmessage->appendChild($Ncontent);
   $Nmessage->appendChild($NpostTime);
   $root->appendChild($Nmessage);
   if ($this->save("guestbook.xml"))
   {
    return 1;
   }
   else
    return 0;

 }
 //==========================================
 // 函数: delMessage($id)
 // 功能: 根据信息ID删除一条信息
 // 参数: $id 留言编号
 // 返回: 1 成功 0 失败
 //==========================================
 function delMessage($id)
 {
  $root  = $this->documentElement;
  $xpath = new DOMXPath($this);
  $Nmessage = $xpath->query("//message[id=$id]");
  if ($root->removeChild($Nmessage->item(0)))
  {
   $this->save("guestbook.xml");
   return 1;
  }
  else 
   return 0;
 }
}

if (isset($_POST['add']))
{
 $guestbook = new guestbook;
 $now = date("Y-m-d H:i:s");
 if ($guestbook->addMessage($_POST['userName'],$_POST['content'],$now))
 {
  echo "<script>alert(‘添加成功’);location.href=’".$_SERVER['PHP_SELF']."’</script>";
 }
 
}
if (isset($_GET['method']) && $_GET['method'] == "del")
{
 $guestbook = new guestbook;
 if ($guestbook->delMessage($_GET['id']))
 {
  echo "<script>alert(‘删除成功’);location.href=’".$_SERVER['PHP_SELF']."’</script>";
 }
}
else
{
 $script = <<<SCRIPT
 <script>
  var xml = new ActiveXObject("Msxml2.DOMDocument");
  var xsl = new ActiveXObject("Msxml2.DOMDocument");
  xml.async = false;
  xml.load("guestbook.xml");
  xsl.async = false;
  xsl.load("guestbook.xsl");
  document.write(xml.transformNode(xsl));
 </script>
SCRIPT;
 $form = <<<FORM
 <form method=’post’ action=’guestbook.php’>
 <input type=text name=’userName’ size=20><br/>
 <textarea name=’content’ cols=50 rows=5></textarea><br/>
 <input type=’submit’ name=’add’ value=’添加留言’>
FORM;
 echo $script;
 echo $form;
 //*/
}
?>
——-样式表guestbook.xsl—————–
<?xml version=’1.0′ encoding=’GB2312′?>
<xsl:stylesheet version=’1.0′ xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/messageList">
<table style=’font-size:12px;’ width=’60%’ cellpadding=’5′ cellspacing=’1′ bgcolor=’#999999′>
<xsl:for-each select=’message’>
<tr>
<td style=’color:#FFFFFF’>
<xsl:value-of select="userName" />
&#160;At&#160;
<xsl:value-of select="postTime" />
&#160;&#160;&#160;&#160;&#160;
<xsl:element name="A">
 <xsl:attribute name="href">guestbook.php?method=del&amp;id=<xsl:value-of select="id" /></xsl:attribute>
 删除
</xsl:element>
</td>
</tr>
<tr bgcolor=’#FFFFFF’>
<td><xsl:value-of select="content" /></td>
</tr>
</xsl:for-each>
</table>
</xsl:template>
</xsl:stylesheet>

先到这回头接着补充一些php + xml 的基础知识。