<?php
class ObjectAndXML {
	private static $xml;
 
	// Constructor
	public function __construct() {
		$this->xml = new XmlWriter();
		$this->xml->openMemory();
		$this->xml->startDocument('1.0');
		$this->xml->setIndent(true);
	}
 
	// Method to convert Object into XML string
	public function objToXML($obj) {
		$this->getObject2XML($this->xml, $obj);
 
		$this->xml->endElement();
 
		return $this->xml->outputMemory(true);
	}
 
	// Method to convert XML string into Object
	public function xmlToObj($xmlString) {
		return simplexml_load_string($xmlString);
	}
 
	private function getObject2XML(XMLWriter $xml, $data) {
		foreach($data as $key => $value) {
			if(is_object($value)) {
				$xml->startElement($key);
				$this->getObject2XML($xml, $value);
				$xml->endElement();
				continue;
			}
			else if(is_array($value)) {
				$this->getArray2XML($xml, $key, $value);
			}
 
			if (is_string($value)) {
				$xml->writeElement($key, $value);
			}
		}
	}
 
	private function getArray2XML(XMLWriter $xml, $keyParent, $data) {
		foreach($data as $key => $value) {
			if (is_string($value)) {
				$xml->writeElement($keyParent, $value);
				continue;
			}
 
			if (is_numeric($key)) {
				$xml->startElement($keyParent);
			}
 
			if(is_object($value)) {
				$this->getObject2XML($xml, $value);
			}
			else if(is_array($value)) {
				$this->getArray2XML($xml, $key, $value);
				continue;
			}
 
			if (is_numeric($key)) {
				$xml->endElement();
			}
		}
	}
}
?>

<?php
$obj = new ObjectAndXML();
 
$str = <<<STR
<?xml version="1.0" encoding="utf-8"?>
<records>
    <person>
    	<name>XYZ</name>
        <age>28</age>
        <gender>Male</gender>
    </person>
    <person>
    	<name>ABC</name>
        <age>25</age>
        <gender>Male</gender>
    </person>
</records>
STR;
 
$recordsObj = $obj->xmlToObj($str);
echo '<pre>';
var_dump($recordsObj);
 
// Above code will give you this output on browser
/*
object(SimpleXMLElement)#3 (1) {
  ["person"]=>
  array(2) {
    [0]=>
    object(SimpleXMLElement)#4 (3) {
      ["name"]=>
      string(3) "XYZ"
      ["age"]=>
      string(2) "28"
      ["gender"]=>
      string(4) "Male"
    }
    [1]=>
    object(SimpleXMLElement)#5 (3) {
      ["name"]=>
      string(3) "ABC"
      ["age"]=>
      string(2) "25"
      ["gender"]=>
      string(4) "Male"
    }
  }
}
*/
 
// If you want to access value of "name" tag under second "person" tag then you can use 
echo $recordsObj->person[1]->name;
?>

<?php
$obj = new ObjectAndXML();
 
$objData1 = new stdClass;
 
$objData1->records->person[0]->name = 'XYZ';
$objData1->records->person[0]->age = '28';
$objData1->records->person[0]->gender = 'Male';
 
$objData1->records->person[1]->name = 'ABC';
$objData1->records->person[1]->age = '25';
$objData1->records->person[1]->gender = 'Male';
 
echo $recordsXML = $obj->objToXML($objData1);
 
// Output will be
/*
<?xml version="1.0"?>
<records>
 <person>
  <name>XYZ</name>
  <age>28</age>
  <gender>Male</gender>
 </person>
 <person>
  <name>ABC</name>
  <age>25</age>
  <gender>Male</gender>
 </person>
</records>
*/
 
$objData2 = new stdClass;
 
$objData2->records->person[0]->name[] = 'XYZ';
$objData2->records->person[0]->name[] = 'ABC';
$objData2->records->person[0]->name[] = 'PQR';
 
$objData2->records->person[1]->name[] = 'XYZ1';
$objData2->records->person[1]->name[] = 'ABC1';
$objData2->records->person[1]->name[] = 'PQR1';
 
echo $recordsXML = $obj->objToXML($objData2);
 
// Output will be
/*
<?xml version="1.0"?>
<records>
 <person>
  <name>XYZ</name>
  <name>ABC</name>
  <name>PQR</name>
 </person>
 <person>
  <name>XYZ1</name>
  <name>ABC1</name>
  <name>PQR1</name>
 </person>
</records>
*/
 
$objData3 = new stdClass;
 
$objData3->records->person->name = 'XYZ';
$objData3->records->person->age = '28';
$objData3->records->person->gender = 'Male';
 
echo $recordsXML = $obj->objToXML($objData3);
 
// Output will be
/*
<?xml version="1.0"?>
<records>
 <person>
  <name>XYZ</name>
  <age>28</age>
  <gender>Male</gender>
 </person>
</records>
*/
?>

<?php
class xml2array {
 
	function xml2array($xml) {
		if (is_string($xml)) {
			$this->dom = new DOMDocument;
			$this->dom->loadXml($xml);
		}
 
		return FALSE;
	}
 
	function _process($node) { 
		$occurance = array();
 
		foreach($node->childNodes as $child) {
			$occurance[$child->nodeName]++;
		}
 
		if($node->nodeType == XML_TEXT_NODE) { 
			$result = html_entity_decode(htmlentities($node->nodeValue, ENT_COMPAT, 'UTF-8'), 
                                     ENT_COMPAT,'ISO-8859-15');
		} 
		else {
			if($node->hasChildNodes()){
				$children = $node->childNodes;
 
				for($i=0; $i<$children->length; $i++) {
					$child = $children->item($i);
 
					if($child->nodeName != '#text') {
						if($occurance[$child->nodeName] > 1) {
							$result[$child->nodeName][] = $this->_process($child);
						}
						else {
							$result[$child->nodeName] = $this->_process($child);
						}
					}
					else if ($child->nodeName == '#text') {
						$text = $this->_process($child);
 
						if (trim($text) != '') {
							$result[$child->nodeName] = $this->_process($child);
						}
					}
				}
			} 
 
			if($node->hasAttributes()) { 
				$attributes = $node->attributes;
 
				if(!is_null($attributes)) {
					foreach ($attributes as $key => $attr) {
						$result["@".$attr->name] = $attr->value;
					}
				}
			}
		}
 
		return $result;
	}
 
	function getResult() {
		return $this->_process($this->dom);
	}
}
?>

<?php
	$obj = new xml2array($XML_string);
	$XML_array = $obj->getResult();
?>