php修改xml的方法

php修改xml的方法：首先创建一个代码示例文件；然后通过“$new->nodeValue=$_content;”方法修改节点值即可。

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php创建、增加、删除、修改xml

创建xml 方法：

<?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('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';   ?>

增加xml 的节点

 <?php  $xmlpatch = 'index.xml';  $_id = '3';  $_title = 'title3';  $_content = 'content3';  $_author = 'author3';  $_sendtime = 'time3';  $_htmlpatch = '3.html';  $doc = new DOMDocument();  $doc -> formatOutput = true;  if($doc -> load($xmlpatch)) {  $root = $doc -> documentElement;//获得根节点(root)  $index = $doc -> createElement('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!';  }  ?>

删除xml 的节点

<?php  $xmlpatch = 'index.xml';  $_id = '3';  $doc = new DOMDocument();  $doc -> formatOutput = true;  if($doc -> load($xmlpatch)) {  $root = $doc -> documentElement;  $elm = $root -> getElementsByTagName('index');  foreach ($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!';  }  ?>

修改XML的节点

 <?php  $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('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!';  }  ?>

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