SimpleXml сортировка и выборка данных

$pattern = '/n=\"(\d{1,})\"/';
$subject = '
    <Dance no="1" name="W">
    <Result n="15" place="3" head="0">43324</Result>
    <Result n="18" place="4" head="0">34466</Result>
    <Result n="31" place="1" head="0">11112</Result>
    <Result n="32" place="6" head="0">66555</Result>
    <Result n="39" place="5" head="0">55633</Result>
    <Result n="43" place="2" head="0">22241</Result>
    </Dance>
    <Dance no="2" name="V">
    <Result n="15" place="3" head="0">33264</Result>
    <Result n="18" place="4" head="0">44425</Result>
    <Result n="31" place="1" head="0">11113</Result>
    <Result n="32" place="6" head="0">66656</Result>
    <Result n="39" place="5" head="0">55542</Result>
    <Result n="43" place="2" head="0">22331</Result>
    </Dance>
';
 
preg_match_all($pattern, $subject, $matches);
print_r($matches);

function sort_p($a, $b) {
    return strcmp($a['place'], $b['place']);
}
        
$pattern = '/n=\"(\d{1,})\"\splace=\"(\d{1,})\"/';
$subject = '
    <Dance no="1" name="W">
    <Result n="15" place="3" head="0">43324</Result>
    <Result n="18" place="4" head="0">34466</Result>
    <Result n="31" place="1" head="0">11112</Result>
    <Result n="32" place="6" head="0">66555</Result>
    <Result n="39" place="5" head="0">55633</Result>
    <Result n="43" place="2" head="0">22241</Result>
    </Dance>
    <Dance no="2" name="V">
    <Result n="15" place="3" head="0">33264</Result>
    <Result n="18" place="4" head="0">44425</Result>
    <Result n="31" place="1" head="0">11113</Result>
    <Result n="32" place="6" head="0">66656</Result>
    <Result n="39" place="5" head="0">55542</Result>
    <Result n="43" place="2" head="0">22331</Result>
    </Dance>
';
 
$data = array();
if ( preg_match_all($pattern, $subject, $matches) ) {
    for ($i = 0; $i < count($matches[0]); $i++) {
        $data[] = array(
            'n' => $matches[1][$i],
            'place' => $matches[2][$i],
        );
    }
    uasort($data, 'sort_p');
}
print_r($data);