代码如下，xml里有多条数据，我想循环显示出所有的数据

请大家帮忙看看，谢谢！

$xml = file_get_contents($url);
//echo $xml."<br>";
$doc = new DOMDocument();
$doc->loadXML($xml);
$toneinfos = $doc->getElementsByTagName("toneinfos");
foreach($toneinfos as $tone){
    $returncodes = $tone->getElementsByTagName("returncode");
    $returncode = $returncodes->item(0)->nodeValue;

    $totalCounts = $tone->getElementsByTagName("totalCount");
    $totalCount = $totalCounts->item(0)->nodeValue;

    $toneids = $tone->getElementsByTagName("toneid");
    $toneid = $toneids->item(0)->nodeValue;

    $tonecodes = $tone->getElementsByTagName("tonecode");
    $tonecode = $tonecodes->item(0)->nodeValue;