ZEND PHP 5 Certification STUDY GUIDE

XML and Web Services ” 201
As you can see, in this example we start by creating a book element and set its
meta:isbn attribute with DomElement::setAttribute(). Next, we create a title element
and a text node containing the book title, which is assigned to the title
element using DomElement::appendChild(). For the author and pub:publisher elements,
we again use DomDocument::createElement(), passing the node’s text contents
as the second attribute. Finally, we append the entire structure to the
DomDocument::documentElement property, which represents the root XML node;
Moving Data
Moving Data is not as obvious as you might expect, because the DOM extension
doesn’t provide a method that takes care of that, explicitly. Instead, you use a combination
of DomNode::appendChild() and DomNode::insertBefore().
$dom = new DOMDocument();
$dom->load("library.xml");
$xpath = new DomXPath($dom);
$xpath->registerNamespace("lib", "http://example.org/library");
$result = $xpath->query("//lib:book");
$result->item(1)->parentNode->insertBefore($result->item(1), $result->item(0));
Here, we take the second book element and place it before the first. In the following
example, on the other hand, we take the first book element and place it at the end:
$dom = new DOMDocument();
$dom->load("library.xml");
$xpath = new DomXPath($dom);
$xpath->registerNamespace("lib", "http://example.org/library");
Licensed to 482634 - Amber Barrow (itsadmin@deakin.edu.au)
$result = $xpath->query("//lib:book");
$result->item(1)->parentNode->appendChild($result->item(0));
DomNode::appendChild() and DomNode::insertBefore() will move the node to the new
location. If you wish to duplicate a node, use “DomNode::cloneNode()” first: