XML解析失败？解决办法

XML解析失败？
XMLDATA:



address="net.tcp://192.168.1.61:9003/class/"
binding="netTcpBinding"
contract="CiWong.Relation.WCFContract.IClassRelationManager"
bindingConfiguration="NetTcpBinding_IClassRelationManager" />
address="net.tcp://192.168.1.61:9005/eshop/"
binding="netTcpBinding"
contract="CiWong.EShop.WCFService.Contract.IEShopContract"
bindingConfiguration="NetTcpBinding_IEShopContract"/>




解析代码：

$list=$doc->getElementsByTagName('system.serviceModel');
$list=$list->item(0);
$clients=$list->getElementsByTagName('client');
$clients=$clients->item(0);
foreach ($clients->attributes as $endpoints) {
$endattname=$endpoints->nodeName;
$endattval=$endpoints->nodeValue;
echo "$endattname=$endattval"."
";
}
?>
echo出来没有任何内容。
请问怎么才能正常把endpoint里面的属性解析出来？

------解决方案--------------------

PHP code

$xml = simplexml_load_file("bb.xml");  
$result = $xml->xpath('/configuration/system.serviceModel/client/endpoint');
foreach($result as $r){
       foreach($r->attributes() as $k=>$v) echo "$k=>$v
";
}