<?
function xml2array($source,$arr){
	$xml = simplexml_load_string(file_get_contents($source));
	$iter = 0;
	foreach($xml->children() as $b){
		$a = $b->getName();
		if(!$b->children()){
			$arr[$a] = trim($b[0]);
		}
		else{
			$arr[$a][$iter] = array();
			$arr[$a][$iter] = xml2phpArray($b,$arr[$a][$iter]);
		}
		$iter++;
	}
	return $arr;
}
?>

$array = xml2array('http://seusite.com.br/arquivo.xml',array());