}
}
}
//获取其他表单域
$author=base64_encode($_POST["author"]);
$content=base64_encode(ereg_replace("rn","<br>",$_POST["content"]));
$smiles=base64_encode($_POST["smiles"]);
if($_POST["title"]){
$title=base64_encode($_POST["title"]);
}else{
$title=base64_encode("无标题");
}
$addtime=date("Y-m-d");
if($imgflag==1){ //如果有上传图片
$photo=base64_encode($randname);
}else{ //否则将photo元素的值设置为NONE
$photo="NONE";
}
$dom=new DOMDocument('1.0','gb2312'); //指定XML的格式
$dom->load("data.xml"); //加载
$root=$dom->getElementsByTagName("messages"); //获取根节点
$root=$root->item(0);
$last_id=$root->lastChild->firstChild->nodeValue; //获取最后一个message的第一个子节点（即id节点）的值
$id=$last_id+1; //新增消息的id
settype($id,"string"); //将其转换为字符型
$message=$root->appendChild(new DOMElement('message')); //添加message节点
$el_id=$message->appendChild(new DOMElement('id')); //添加message节点的各个子节点
$el_id->appendChild($dom->createTextNode($id));
$el_author=$message->appendChild(new DOMElement('author'));
$el_author->appendChild($dom->createTextNode($author));
$el_title=$message->appendChild(new DOMElement('title'));
$el_title->appendChild($dom->createTextNode($title));
$el_smiles=$message->appendChild(new DOMElement('smiles'));
$el_smiles->appendChild($dom->createTextNode($smiles));
$el_content=$message->appendChild(new DOMElement('content'));
$el_content->appendChild($dom->createTextNode($content));
$el_addtime=$message->appendChild(new DOMElement('addtime'));
$el_addtime->appendChild($dom->createTextNode($addtime));
$el_photo=$message->appendChild(new DOMElement('photo'));
$el_photo->appendChild($dom->createTextNode($photo));
$dom->save("data.xml"); //保存XML
echo "<meta http-equiv="refresh" content="2;url=index.php">n";
echo "谢谢您的留言，2秒钟返回首页";
}
?>
（3）index.php
本页面用于显示留言信息
<p><a href="add.php">添加留言</a></p>
<?php
$dom=new DOMDocument('1.0','gb2312');
$dom->load("data.xml"); //加载
$root=$dom->getElementsByTagName("messages");
$root=$root->item(0);
$message=$root->getElementsByTagName("message"); //获取所有message节点
