DOMDocument - merge elements into one XML

Question

Trying to merge root and body into one XML. The reason the 2 elements are splitted when being created is because they will be pre-constructed and exist in different files, thus loaded.

My code:

<?php


$root = new DOMDocument();
$root->loadXML('<root/>');

$body = new DOMDocument();
$body->loadXML('<body/>');

foreach ($body->documentElement->childNodes as $child) {
  $body->documentElement->appendChild(
    $body->importNode($child, TRUE)
  );
}

echo $body->saveXML();

Wanted result:

<?xml version="1.0"?>
<root>
<body/>
</root>

Answer 1

The length of $body->documentElement->childNodes->length is 0 as there are no childNodes for <body/>

As you want to import $body into $root you should append the child and import the node using root instead of child.

For example

$root = new DOMDocument();
$root->loadXML('<root/>');

$body = new DOMDocument();
$body->loadXML('<body/>');

foreach ($body->childNodes as $child) {
    $root->documentElement->appendChild(
        $root->importNode($child, TRUE)
    );
}

echo $root->saveXML();

Output

<?xml version="1.0"?>
<root><body/></root>

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