PHP写XML方法很多,这里主要介绍一下DOMDocument的用法,跟 JS大体上相同,其实非常简单。
共分四个文件,分别是创建、增加、删除、修改四个功能,变量都是写死的,改一改用$_POST方式接收就可以用了
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<?php
$xmlpatch='index.xml';
$_id='1';
$_title='title1';
$_content='content1';
$_author='author1';
$_sendtime='time1';
$_htmlpatch='1.html';
$doc=newDOMDocument('1.0','utf-8');
$doc-> formatOutput = true;
$root=$doc-> createElement('root');//新建节点
$index=$doc-> createElement('index');//新建节点
$url=$doc-> createAttribute('url');//新建属性
$patch=$doc-> createTextNode($_htmlpatch);//新建TEXT值
$url-> appendChild($patch);//将$patch文本设为$url属性的值
$id=$doc-> createAttribute('id');
$newsid=$doc-> createTextNode($_id);
$id-> appendChild($newsid);
$title=$doc-> createAttribute('title');
$newstitle=$doc-> createTextNode($_title);
$title-> appendChild($newstitle);
$content=$doc-> createTextNode($_content);//节点值
$author=$doc-> createAttribute('author');
$newsauthor=$doc-> createTextNode($_author);
$author-> appendChild($newsauthor);
$sendtime=$doc-> createAttribute('time');
$newssendtime=$doc-> createTextNode($_sendtime);
$sendtime-> appendChild($newssendtime);
$index-> appendChild($id);//将$id设为index节点的属性,以下类同
$index-> appendChild($title);
$index-> appendChild($content);
$index-> appendChild($url);
$index-> appendChild($author);
$index-> appendChild($sendtime);
$root-> appendChild($index);//设置index为root字节点
$doc-> appendChild($root);//设置root为跟节点
$doc-> save($xmlpatch);//保存文件
echo$xmlpatch.' has create success';
?>
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<p>
//add.php 增加功能(跟index.php文件差不多,主要就是加个load载入跟 $root = $doc -> do//cumentElement获得跟节点
</p>
<p>
$xmlpatch='index.xml';
$_id='2';
$_title='title2';
$_content='content2';
$_author='author2';
$_sendtime='time2';
$_htmlpatch='2.html';
</p>
<p>
$doc=newDOMDocument();
$doc-> formatOutput = true;
if($doc-> load($xmlpatch)) {
$root=$doc-> documentElement;//获得根节点(root)
$index=$doc-> createElement('index');
</p>
<p>
$url=$doc-> createAttribute('url');
$patch=$doc-> createTextNode($_htmlpatch);
$url-> appendChild($patch);
</p>
<p>
$id=$doc-> createAttribute('id');
$newsid=$doc-> createTextNode($_id);
$id-> appendChild($newsid);
</p>
<p>
$title=$doc-> createAttribute('title');
$newstitle=$doc-> createTextNode($_title);
$title-> appendChild($newstitle);
</p>
<p>
$content=$doc-> createTextNode($_content);
</p>
<p>
$author=$doc-> createAttribute('author');
$newsauthor=$doc-> createTextNode($_author);
$author-> appendChild($newsauthor);
</p>
<p>
$sendtime=$doc-> createAttribute('time');
$newssendtime=$doc-> createTextNode($_sendtime);
$sendtime-> appendChild($newssendtime);
</p>
<p>
$index-> appendChild($id);
$index-> appendChild($title);
$index-> appendChild($content);
$index-> appendChild($url);
$index-> appendChild($author);
$index-> appendChild($sendtime);
</p>
<p>
$root-> appendChild($index);
</p>
<p>
$doc-> save($xmlpatch);
</p>
<p>
echo$_id.' has been added in '.$xmlpatch;
</p>
<p>
}else{
echo'xml file loaded error!';
}
</p>
<p>
}
</p>
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//edit.php 修改功能(这里只修改title属性值 跟节点值)
<?php
$xmlpatch='index.xml';
$_id='2';
$_title='has been changed';
$_content='has been changed';
$doc=newDOMDocument();
$doc-> formatOutput = true;
if($doc-> load($xmlpatch)) {
$root=$doc-> documentElement;
$elm=$root-> getElementsByTagName('index');
$checkexist= 0;
foreach($elmas$new) {
if($new-> getAttribute('id') ==$_id) {
$new-> setAttribute('title',$_title);
$new-> nodeValue =$_content;//修改节点值,真是太意外了,没想到跟JS一样直接能赋值...
//$new -> removeChild($new -> nodevalue);
$checkexist= 1;
}
}
if($checkexist== 0) {
echo$_id.' is not found in '.$xmlpatch;
}else{
$doc-> save($xmlpatch);
echo$_id.' has been changed';
}
}else{
echo'xml file loaded error!';
}
?>
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//del.php 删除功能
<?php
$xmlpatch='index.xml';
$_id='2';
$doc=newDOMDocument();
$doc-> formatOutput = true;
if($doc-> load($xmlpatch)) {
$root=$doc-> documentElement;
$elm=$root-> getElementsByTagName('index');
foreach($elmas$new) {
if($new-> getAttribute('id') ==$_id) {
if($root-> removeChild($new)) {
echo$_id.' has been deleted';
}else{
echo$_id.' delete failed';
}
}
}
$doc-> save($xmlpatch);
}else{
echo'xml file loaded error!';
}
?>
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