Php 如何从一个父元素的多个XML子元素中获取所有值

我有我的供应商提供的XML文件。我想从那个文件中读取数据。我的read.php文件包含：

$xml = simplexml_load_file('export.xml');
$result = $xml->xpath("//product");
$array= array();
    foreach ($result as $product) {
        $id = (string)$product->id;
        $code = (string)$product->code;
        $ean = (string)$product->combinations->combination->ean;
        $quantity = (string)$product->combinations->combination->quantity;
        print_r('ID:' .$id. ' CODE:' .$code. ' EAN: '.$ean.' - <b>'.$quantity.'</b> szt.<br />');
}

这很好，但这只是第一个组合

ID:684 CODE:113 EAN: 111 - 0 szt.

但我还需要这个ID的其他组合

ID:684 CODE:113 EAN: 222 - 5 szt.
ID:684 CODE:113 EAN: 333 - 2 szt.

---

在哪里找到解决方案？

简单地添加一个foreach$产品->组合->组合

例如：

$xml = simplexml_load_file('export.xml');
$result = $xml->xpath("//product");
$array= array();
    foreach ($result as $product) {
        $id = (string)$product->id;
        $code = (string)$product->code;
        foreach( $product->combinations->combination as $combination ){

            $ean = (string)$combination->ean;
            $quantity = (string)$combination->quantity;
            print 'ID:' .$id. ' CODE:' .$code. ' EAN: '.$ean.' - <b>'.$quantity.'</b> szt.<br />';
        }
}

---

foreach$product->组合为$COMPLINE{？顶尖！完美无瑕！

$xml = simplexml_load_file('export.xml');
$result = $xml->xpath("//product");
$array= array();
    foreach ($result as $product) {
        $id = (string)$product->id;
        $code = (string)$product->code;
        foreach( $product->combinations->combination as $combination ){

            $ean = (string)$combination->ean;
            $quantity = (string)$combination->quantity;
            print 'ID:' .$id. ' CODE:' .$code. ' EAN: '.$ean.' - <b>'.$quantity.'</b> szt.<br />';
        }
}