Feature: element_encode()

[lykciv]

Feature Request

Q	A
New Feature	yes
RFC	no
BC Break	no

Summary

I have come across a scenario where I needed to generated a part of an xml document instead of the full document. The available helper functions only allow for generating full documents. It might be useful to have a helper function like element_encode().

Example full doc

$doc = [
    'Data' => [
        'Hello' => 'World',
        'Extra' => [
            'Lorem' => 'Ipsum',
        ],
    ],
];

xml_encode($doc);

Output

<?xml version="1.0"?>
<Data>
  <Hello>World</Hello>
  <Extra>
    <Lorem>Ipsum</Lorem>
  </Extra>
</Data>

Example partial doc

$element = [
    'Lorem' => 'Ipsum',
];

element_encode($element);

Output

<Lorem>Ipsum</Lorem>

[veewee]

It is possible by using document_encode($data) and format the document_element() through to_xml().

$document = document_encode($data, ...$configurators);
$result = xml_string()($document->locate(document_element()));

But this sure sounds like a lovely shortcut function to have in the toolbelt.
Feel free to provide a PR.