php修改xml的方法-PHP问题

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：

 formatOutput = true;
 
$root = $doc -> createElement(&＃39;root&＃39;);//新建节点
 
$index = $doc -> createElement(&＃39;index&＃39;);//新建节点
 
$url = $doc -> createAttribute(&＃39;url&＃39;);//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(&＃39;id&＃39;);
$newsid = $doc -> createTextNode($_id);
$id -> appendChild($newsid);
 
$title = $doc -> createAttribute(&＃39;title&＃39;);
$newstitle = $doc -> createTextNode($_title);
$title -> appendChild($newstitle);
 
$cOntent= $doc -> createTextNode($_content);//节点值
 
$author = $doc -> createAttribute(&＃39;author&＃39;);
$newsauthor = $doc -> createTextNode($_author);
$author -> appendChild($newsauthor);
 
$sendtime = $doc -> createAttribute(&＃39;time&＃39;);
$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 . &＃39; has create success&＃39;;
 
?>

增加xml 的节点

  formatOutput = true; 
if($doc -> load($xmlpatch)) { 
$root = $doc -> documentElement;//获得根节点(root) 
$index = $doc -> createElement(&＃39;index&＃39;); 
$url = $doc -> createAttribute(&＃39;url&＃39;); 
$patch = $doc -> createTextNode($_htmlpatch); 
$url -> appendChild($patch); 
$id = $doc -> createAttribute(&＃39;id&＃39;); 
$newsid = $doc -> createTextNode($_id); 
$id -> appendChild($newsid); 
$title = $doc -> createAttribute(&＃39;title&＃39;); 
$newstitle = $doc -> createTextNode($_title); 
$title -> appendChild($newstitle); 
$cOntent= $doc -> createTextNode($_content); 
$author = $doc -> createAttribute(&＃39;author&＃39;); 
$newsauthor = $doc -> createTextNode($_author); 
$author -> appendChild($newsauthor); 
$sendtime = $doc -> createAttribute(&＃39;time&＃39;); 
$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 . &＃39; has been added in &＃39; . $xmlpatch; 
} else { 
echo &＃39;xml file loaded error!&＃39;; 
} 
?>

删除xml 的节点

 formatOutput = true; 
if($doc -> load($xmlpatch)) { 
$root = $doc -> documentElement; 
$elm = $root -> getElementsByTagName(&＃39;index&＃39;); 
foreach ($elm as $new) { 
if($new -> getAttribute(&＃39;id&＃39;) == $_id) { 
if($root -> removeChild($new)) { 
echo $_id . &＃39; has been deleted&＃39;; 
} else { 
echo $_id . &＃39; delete failed&＃39;; 
} 
} 
} 
$doc -> save($xmlpatch); 
} else { 
echo &＃39;xml file loaded error!&＃39;; 
} 
?>

修改XML的节点

  formatOutput = true; 
if($doc -> load($xmlpatch)) { 
$root = $doc -> documentElement; 
$elm = $root -> getElementsByTagName(&＃39;index&＃39;); 
$checkexist = 0; 
foreach ($elm as $new) { 
if($new -> getAttribute(&＃39;id&＃39;) == $_id) { 
$new -> setAttribute(&＃39;title&＃39;, $_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 . &＃39; is not found in &＃39; . $xmlpatch; 
} else { 
$doc -> save($xmlpatch); 
echo $_id . &＃39; has been changed&＃39;; 
} 
} else { 
echo &＃39;xml file loaded error!&＃39;; 
} 
?>

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