按子元素的值删除XML元素

Question

I have a xml file like:

<file>
    <data>
        <input name="id">1</input>
        <input name="name">Mike</input>
    </data>
    <data>
        <input name="id">2</input>
        <input name="name">Andree</input>
    </data>
</file>

How to delete element:data in value element:input 1 by attribute:id

I've read this example php-delete-xml-element but this do not have the same level of depth that I am looking for.

NB: I'm hoping to use DOMDocument

Answer 1

I know you wanted to do this with DOMDocument, but if you simply need to delete node, you can do this with SimpleXmlElement and XPath:

$xml = new SimpleXMLElement($xmlString);

$id = 1;

$data = $xml->xpath('//input[@name="id"][.=' . $id . ']/..');

if (isset($data[0])) {
    unset($data[0]->{0});
}

Here is working demo.

The magic with unset() is explained here.