如何通过标记名称删除其中包含所有元素的元素 [英] How to delete a element by tag name with all elements inside it

问题描述

我想在php中使用dom removeChild函数删除标记之间的所有内容.

I want to use the dom removeChild function in php to remove everything between a tag.

我的xml看起来像

<root>
  <element>text</element>

  <remove>
    text
    <morexml>text</morexml>
  </remove>
</root>

现在，我想删除包含整个标签在内的标签.我该怎么做呢?我没有头绪.我正在尝试使用发现的唯一dom功能:removeChild.

Now I want to remove the tag including its entire inside. How do I do this? I do not have a clue. I am trying to use the only dom function i found: removeChild.

删除后，它必须看起来像这样:

When removed it has to look like this:

 <root>
      <element>text</element>

 </root>

是否有php dom函数可以做到这一点?我在Google或stackoverflow上找不到它.

Is there a php dom function to do this? I can not find it on google or stackoverflow.

推荐答案

$dom = new DOMDocument;
$dom->loadXML($xml);
$dom->getElementsByTagName('root')->item(0)
   ->removeChild($dom->getElementsByTagName('remove')->item(0));

这是非常具体的.如果需要更多通用性，可以使用XPath:

This is very specific, though. You can use XPath if you need more generality:

foreach ($xpath->query('//remove') as $node) {
   $node->parentNode->removeChild($node);
}

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