XML 增删改查

 
<?php
$xmlpatch = 'index.xml';
$_id = '1';
$_title = 'title1';
$_content = 'content1';
$_author = 'author1';
$_sendtime = 'time1';
$_htmlpatch = '1.html';
$doc = new DOMDocument('1.0', 'utf-8');
$doc -> formatOutput = true;
$root = $doc -> createElement_x('root');//新建节点
$index = $doc -> createElement_x('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';//增加
$xmlpatch = 'index.xml';
$_id = '2';
$_title = 'title2';
$_content = 'content2';
$_author = 'author2';
$_sendtime = 'time2';
$_htmlpatch = '2.html';
$doc = new DOMDocument();
$doc -> formatOutput = true;
if($doc -> load($xmlpatch)) {$root = $doc -> documentElement;//获得根节点(root)$index = $doc -> createElement_x('index');$url = $doc -> createAttribute('url');$patch = $doc -> createTextNode($_htmlpatch);$url -> appendChild($patch);$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);$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);$index -> appendChild($title);$index -> appendChild($content);$index -> appendChild($url);$index -> appendChild($author);$index -> appendChild($sendtime);$root -> appendChild($index);$doc -> save($xmlpatch);echo $_id . ' has been added in ' . $xmlpatch;
} else {echo 'xml file loaded error!';
}//edit.php 修改功能(这里只修改title属性值 跟节点值)
$xmlpatch = 'index.xml';
$_id = '2';
$_title = 'has been changed';
$_content = 'has been changed';
$doc = new DOMDocument();
$doc -> formatOutput = true;
if($doc -> load($xmlpatch)) {$root = $doc -> documentElement;$elm = $root -> getElementsByTagName_r('index');$checkexist = 0;//foreach ($elm as $new) {
//       if($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!';
}//del.php 删除功能

$xmlpatch = 'index.xml';
$_id = '2';
$doc = new DOMDocument();
$doc -> formatOutput = true;
if($doc -> load($xmlpatch)) {$root = $doc -> documentElement;$elm = $root -> getElementsByTagName_r('index');foreach ($elm as $new) {if($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!';
}?>