XML_Tree

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  Building an XML document with XML_Tree is quite easy, and can be done
when the DOM XML extension is not available. You can install this PEAR
class by typing pear install XML_Tree at your command prompt. To show you
the difference between XML_Trees and the “normal” DOM XML method, we’re
going to build the same X(HT)ML document again.

<?php
require_once 'XML/Tree.php';
/* Create the document and the root node */
$dom = new XML_Tree;
$html =& $dom->addRoot('html', '',
array (
'xmlns' => 'http://www.w3.org/1999/xhtml',
'xml:lang' => 'en',
'lang' => 'en'
)
);
/* Create head and title elements */
$head =& $html->addChild('head');
$title =& $head->addChild('title', 'XML Example');
/* Create the body and p elements */
$body =& $html->addChild('body', '', array ('background' =>
➥'bg.png'));
$p =& $body->addChild('p');
/* Add the "Moved to" */
$p->addChild(NULL, "Moved to ");
/* Add the a */
$p->addChild('a', 'example.org', array ('href' =>
➥'http://example.org'));

/* Add the ".", br and "foo & bar" */
$p->addChild(NULL, ".");
$p->addChild('br');
$p->addChild(NULL, "foo & bar");
/* Dump the representation */
$dom->dump();
?>

As you can see, it’s much easier to add an element with attributes and
(simple) content with XML_Tree. For example, look at the following line that
adds the a element to the p element:
$p->addChild('a', 'example.org', array ('href' =>
➥'http://example.org'));
Instead of four method calls, you can add it with a one liner. Of course,
the DOM XML extension has many more features than XML_Tree, but for simple
tasks, we recommend this excellent PEAR Class.

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