如何将HTML片段组合到DOMDocument中？

Question

It appears that loadHTML and loadHTMLFile for a files representing sections of an HTML document seem to fill in html and body tags for each section, as revealed when I output with the following:

$doc = new DOMDocument();
$doc->loadHTMLFile($file);
$elements = $doc->getElementsByTagName('*');

if( !is_null($elements) ) {
    foreach( $elements as $element ) {
        echo "<br/>". $element->nodeName. ": ";

        $nodes = $element->childNodes;
        foreach( $nodes as $node ) {
            echo $node->nodeValue. "
";
        }
    }
}

Since I plan to assemble these parts into the larger document within my own code, and I've been instructed to use DOMDocument to do it, what can I do to prevent this behavior?

Answer 1

The closest you can get is to use the DOMDocumentFragment.

Then you can do:

$doc = new DOMDocument();
...
$f = $doc->createDocumentFragment();
$f->appendXML("<foo>text</foo><bar>text2</bar>"); 
$someElement->appendChild($f);

However, this expects XML, not HTML.

In any case, I think you're creating an artificial problem. Since you know the behavior is to create the html and body tags you can just extract the elements in the file from within the body tag and then import the, to the DOMDocument where you're assembling the final file. See DOMDocument::importNode.