<?php
header("Content-Type: application/xml");
/*
$doc = domxml_new_doc("1.0");
$html = $doc->create_element_ns("http://www.w3.org/1999/xhtml","html", "xh");
$head = $doc->create_element_ns("http://www.w3.org/1999/xhtml","head", "xh");
$title = $doc->create_element_ns("http://www.w3.org/1999/xhtml","title", "xh");
$body = $doc->create_element_ns("http://www.w3.org/1999/xhtml","body", "xh");
$p = $doc->create_element_ns("http://www.w3.org/1999/xhtml","p", "xh");
$text = $doc->create_text_node("Testing");

$doc->append_child($html);
$html->append_child($head);
$html->append_child($body);
$head->append_child($title);
$text = $doc->create_text_node("Testing");
$title->append_child($text);
$text = $doc->create_text_node("Testing");
$p->append_child($text);
$body->append_child($p);
*/


if (!$dom = domxml_open_file("test.xhtml")) {
  echo "Error while parsing the document\n";
  exit;
}

$root = $dom->document_element();
$p = $dom->create_element("p");
$text = $dom->create_text_node("Added paragraph.");
$p->append_child($text);
$body = $root->get_elements_by_tagname("body");//
$body[0]->append_child($p);

echo $dom->dump_mem(true, 'UTF-8');
?>