你可以试试

$list = groupBy($xml, "WebCategory");
foreach ( $list['Mobiles'] as $product ) {
    printf('<li>%s %s</li>', $product->Code, $product->Name);
}

输出

使用的函数

function groupBy($xml, $categoryName) {
    $xml = new \SimpleXMLElement($xml);
    $category = array();
    foreach ( $xml as $row ) {
        $attr = $row->attributes();

        if (! isset($attr->$categoryName)) {
            trigger_error("$categoryName does not exist in XML");
            break;
        }

        $category[(string) $attr->$categoryName][] = $attr;
    }
    return $category;
}

观看现场演示