function DOMxml2array($n) {
  $return=array();
 
  foreach($n->childNodes as $nc)
   ($nc->hasChildNodes())
   ?($n->firstChild->nodeName== $n->lastChild->nodeName&&$n->childNodes->length>1)
   ?$return[$nc->nodeName][]=xml2array($item)
   :$return[$nc->nodeName]=xml2array($nc)
   :$return=$nc->nodeValue;

  return $return;
}

$xml= new DOMDocument();
$xml->preserveWhiteSpace=false;
$xml->loadXML($xmlcode);
print_r(DOMxml2array($xml));

$xml= new DOMDocument();
$xml->preserveWhiteSpace=false;
$xml->load($filename);
print_r(DOMxml2array($xml));

<?php
function DOMxml2array($n) {
 $return=array();

 foreach($n->childNodes as $nc)
  ($nc->hasChildNodes())
  ?($n->firstChild->nodeName== $n->lastChild->nodeName&&$n->childNodes->length>1)
  ?$return[$nc->nodeName][]=xml2array($item)
  :$return[$nc->nodeName]=xml2array($nc)
  :$return=$nc->nodeValue;

 return $return;
}

$xml= new DOMDocument();
$xml->preserveWhiteSpace=false;
$xml->load($url);
print_r(DOMxml2array($xml));
?>

Call to undefined function: load()

function simplexml2array($xml) {
  if (get_class($xml) == 'SimpleXMLElement') {
      $attributes = $xml->attributes();
      foreach($attributes as $k=>$v) {
          if ($v) $a[$k] = (string) $v;
      }
      $x = $xml;
      $xml = get_object_vars($xml);
  }
  if (is_array($xml)) {
      if (count($xml) == 0) return (string) $x; // for CDATA
      foreach($xml as $key=>$value) {
          $r[$key] = simplexml2array($value);
      }
      if (isset($a)) $r['@'] = $a;    // Attributes
      return $r;
  }
  return (string) $xml;
}

<?php
function DOMxml2array($n) {
$return=array();

foreach($n->childNodes as $nc)
 ($nc->hasChildNodes())
 ?($n->firstChild->nodeName== $n->lastChild->nodeName&&$n->childNodes->length>1)
 ?$return[$nc->nodeName][]=xml2array($item)
 :$return[$nc->nodeName]=xml2array($nc)
 :$return=$nc->nodeValue;

return $return;
}

if ($xml = domxml_open_file($url)) {
   print_r(DOMxml2array($xml->document_element));
}
?>