PHP SimpleXML: Function New_Doc

PHP Version: PHP4 >= 4.2.1

Description

PHPs DOM functions include domxml_new_doc() to create new XML documents, dmxml_open_file() to open an XML document file as a DOM object, and domxml_open_mem() to create a DOM object from an XML document already in memory. These functions return a DOM object, not a String to other common data type. When you use the PHP DOM extension functions, you typically first create a DOM document object and then manipulate it using functions that are part of the class of that object. There are a number of object classes available, and by starting with a DOMDocument object, you can then examine it and retrieve new objects reflecting XML document components such as element, attributes and so on. domxml_new_doc() function creates an XML document from the scratch and returns it.

Example:

<?php

$doc = domxml_new_doc("1.0");

$root = $doc->create_element("root");

$root = $doc->append_child($root);

$child1 = $doc->create_element("child1");

$child1 = $root->append_child($child1);

$child2= $doc->create_element("child2");

$child2= $head->append_child($child2);

$textchild2 = $doc->create_text_node("Text Element in Child2");

$ textchild2 = $title->append_child($textchild2);

$doc->dump_file("/tmp/test.xml", false, true);

?>

How it Works:

I have created a small xml document using functions available in PHP4.

$doc = domxml_new_doc("1.0");

In the above line of code, I created a new XML DOM object using domxml_new_doc(). This created a new DOM object.

$root = $doc->create_element("root");

After I created a new DOM object, I created an root element with name root.

$root = $doc->append_child($root);

I appended the root element to the DOM document, which I have created in the first step.

$child1 = $doc->create_element("child1");

$child1 = $root->append_child($child1);

$child2= $doc->create_element("child2");

$child2= $head->append_child($child2);

$textchild2 = $doc->create_text_node("Text Element in Child2");

$ textchild2 = $title->append_child($textchild2);

Then I created some child elements and text node and appended in appropriate place.

$doc->dump_file("/tmp/test.xml", false, true);

After I created the DOM document, then I saved it as an xml file with name test.xml. I used dump_file() function to store as a file.

Warning:

This function is EXPERIMENTAL. The behavior of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.