php - 如果节点具有属性，如何从 xml 检索值？

Question

Possible Duplicate:
How to get an attribute with SimpleXML?

如何获取高度、长度、重量和宽度的值？因为它有属性吗？在其他值中，我检索它没有问题，只是这个值具有属性。

注意:高度、长度、重量和宽度部分只是问题

这是我检索它的方法:

$from_amazon = array(
   'asin'     => $item->ASIN,
   'product_name'
              => $item->ItemAttributes->Title, 
   'image'    => $item->SmallImage->URL,
   'price'    => $item->ItemAttributes->ListPrice->FormattedPrice, 
   'product_description'
              => $item->EditorialReviews->EditorialReview->Content,
   'category' => $item->ItemAttributes->ProductGroup,
   'weight'   => $item->ItemAttributes->PackageDimensions->Weight
);

Answer 1

simplexml 库将返回该节点的对象。但你只想要它的文本。因此，您需要将其转换为字符串:

'weight'   => (string) $item->ItemAttributes->PackageDimensions->Weight
              ^^^^^^^^

这将为您提供该 XML 节点的字符串文本。

---

在 Simplexml documentation^Docs您会发现，示例#6 比较元素和属性与文本:

To compare an element or attribute with a string or pass it into a function that requires a string, you must cast it to a string using (string). Otherwise, PHP treats the element as an object.

(string) $movies->movie->title