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    matthijs at stdin dot nl
    14 years ago
    Note that DOMDocumentFragment is a bit special when it's added to another node. When that happens, not the fragment itself is added as a child, but all of the children of the fragment are moved over to the new parent node.

    For example, consider this script:

    <?php

    /* Create a document and a fragment containing a single node */
    $doc = new DOMDocument();
    $fragment = $doc->createDocumentFragment();
    $fragment->appendChild($doc->createElement('foo'));

    /* Now, the foo node is a child of the fragment */
    var_dump($fragment->firstChild);

    /* After appending the fragment to another node, the children of the
    * fragment will have been transfered to that node (and the fragment is
    * not present in the children list!) */
    $doc->appendChild($fragment);
    /* So the fragment has no children anymore */
    var_dump($fragment->firstChild);
    /* But $doc has a single child, which is the foo element, not the
    * fragment */
    var_dump($doc->childNodes->length);
    var_dump($doc->firstChild);

    ?>

    This produces the following output:

    object(DOMElement)#3 (0) {
    }
    NULL
    int(1)
    object(DOMElement)#3 (0) {
    }

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