XML 增删改查

<?php

$xmlpatch = 'index.xml';

$_id = '';

$_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 = '';

$_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 = '';

$_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 = ;

    //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 == ) {

       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 = '';

$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!';

}

?>
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