PHP XML DOMDocument按属性值删除子项？

I am generating an XML File on the fly and want to remove certain childs by their attribute name.

我正在动态生成XML文件，并希望通过其属性名称删除某些子项。

For example: Data.xml

例如：Data.xml

<root>
<item name="item-1">
  <sub1>some text</sub1>
  <sub2>etc.</sub2>
</item>
<item name="item-2">
  <sub1>some different text</sub1>
  <sub2>etc.</sub2>
</item>
</root>

Now I am trying to remove an element by the attribute name. (i.e. "item-1")

现在我试图通过属性名称删除元素。（即“第1项”）

That's how my XML Doc and my elements are set:

这就是我的XML Doc和我的元素的设置方式：

$doc = new DOMDocument('1.0', 'utf-8');
$root = $doc->createElement("root");
$doc->appendChild($root);

// Foreach... {

$item = $doc->createElement("item");
$item->setAttributeNode(new DOMAttr('name', 'item-'.$i));
$root->appendChild($item);

}

$doc->save("Data.xml")

I'd love to have something like: $doc->removeElementByAttributeValue("item-1"), but I can't find the trick :-(

我喜欢这样的东西：$ doc-> removeElementByAttributeValue（“item-1”），但我找不到诀窍:-(

1 个解决方案

#1

Use xpath to find the node:

使用xpath查找节点：

//item[@name='item-1']

which'll return the exact matching node, which you can then pass into the removeChild call

它将返回完全匹配的节点，然后您可以将其传递给removeChild调用

#1