Convert XML to PHP array

Here is a class to convert the XML to a PHP array, the following is the code for the class

<?php
/**
* Xml2array:a class to convert XML to array in PHP
* It returns the array which can is converted back to XML using the Array2xml script
* It takes an XML string or a DOMDocument object as an input.
*
* See Array2xml:http://www.lalit.org/lab/convert-php-array-to-xml-with-attributes
*
* Author:lalit Patel
* Website:http://www.lalit.org/lab/convert-xml-to-array-in-php-xml2array
* License:apache License 2.0
* http://www.apache.org/licenses/LICENSE-2.0
* version:0.1 (DEC 2011)
* version:0.2 (2012)
* Fixed typo ' DomDocument ' to ' DomDocument '
*
* Usage:
* $array = Xml2array::createarray ($xml);
*/

Class Xml2array {

private static $xml = null;
private static $encoding = ' UTF-8 ';

/**
* Initialize the root XML node [optional]
* @param $version
* @param $encoding
* @param $format _output
*/
public static function init ($version = ' 1.0 ', $encoding = ' UTF-8 ', $format _output = True) {
Self:: $xml = new DOMDocument ($version, $encoding);
Self:: $xml->formatoutput = $format _output;
Self:: $encoding = $encoding;
}

/**
* Convert an XML to Array
* @param string $node _name-name of the root node to be converted
* @param array $arr-aray to be converterd
* @return DOMDocument
*/
public static function &createarray ($input _xml) {
$xml = Self::getxmlroot ();
if (is_string ($input _xml)) {
$parsed = $xml->loadxml ($input _xml);
if (! $parsed) {
throw new Exception (' [Xml2array] Error parsing the XML string. ');
}
} else {
if (Get_class ($input _xml)! = ' DOMDocument ') {
throw new Exception (' [Xml2array] The input XML object should be of type:domdocument. ');
}
$xml = self:: $xml = $input _xml;
}
$array [$xml->documentelement->tagname] = Self::convert ($xml->documentelement);
Self:: $xml = null; Clear the XML node in the class for 2nd time use.
return $array;
}

/**
* Convert an Array to XML
* @param mixed $node-xml as a string or as an object of DOMDocument
* @return Mixed
*/
private static function &convert ($node) {
$output = Array ();

Switch ($node->nodetype) {
Case Xml_cdata_section_node:
$output [' @cdata '] = Trim ($node->textcontent);
Break

Case Xml_text_node:
$output = Trim ($node->textcontent);
Break

Case Xml_element_node:

For each child node, call the covert function recursively
For ($i =0, $m = $node->childnodes->length; $i < $m; $i + +) {
$child = $node->childnodes->item ($i);
$v = Self::convert ($child);
if (Isset ($child->tagname)) {
$t = $child->tagname;

Assume more nodes of same kind is coming
if (!isset ($output [$t])) {
$output [$t] = array ();
}
$output [$t] = $v;
} else {
Check if it isn't an empty text node
if ($v!== ") {
$output = $v;
}
}
}

if (Is_array ($output)) {
If only one node of its kind, assign it directly instead if array ($value);
foreach ($output as $t = = $v) {
if (Is_array ($v) && count ($v) ==1) {
$output [$t] = $v [0];
}
}
if (empty ($output)) {
For empty nodes
$output = ";
}
}

Loop through the attributes and collect them
if ($node->attributes->length) {
$a = array ();
foreach ($node->attributes as $attrName = + $attrNode) {
$a [$attrName] = (string) $attrNode->value;
}
If its a leaf node, store the value in @value instead of directly storing it.
if (!is_array ($output)) {
$output = Array (' @value ' = = $output);
}
$output [' @attributes '] = $a;
}
Break
}
return $output;
}

/*
* Get The root XML node, if there isn ' t one, create it.
*/
private static function Getxmlroot () {
if (Empty (self:: $xml)) {
Self::init ();
}
Return self:: $xml;
}
}
?>

Convert XML to PHP array