当我尝试从XML文件中提取信息时,我收到此错误。获取信息的代码是:
//retrieve amazon data
$parsed_xml = amazon_xml($isbn);
$amazonResult = array();
//print_r($parsed_xml); die;
$current = $parsed_xml->ListMatchingProductsResponse->ListMatchingProductsResult->Products->Product;
//if($parsed_xml) {
$amazonResult = array(
'Title' => $current->AttributeSets->children('ns2')->ItemAttributes->Title,
'SalesRank' => $current->SalesRankings->SalesRank->Rank,
'ListPrice' => $current->AttributeSets->ItemAttributes->ListPrice->Amount,
'ImageURL' => $current->AttributeSets->ItemAttributes->SmallImage->URL,
'DetailURL' => $current->AttributeSets->ItemAttributes->SmallImage->URL,
,XML文件是:
<?xml version="1.0"?>
<ListMatchingProductsResponse xmlns="http://mws.amazonservices.com/schema/Products/2011-10-01">
<ListMatchingProductsResult>
<Products xmlns="http://mws.amazonservices.com/schema/Products/2011-10-01" xmlns:ns2="http://mws.amazonservices.com/schema/Products/2011-10-01/default.xsd">
<Product>
<AttributeSets>
<ns2:ItemAttributes xml:lang="en-US">
<ns2:Title>JavaScript: The Missing Manual</ns2:Title>
当我运行这个时,我得到一个空值,当我检查错误日志时,我得到: 在第52行的...中的非对象上调用成员函数children()。 违规行是:
'Title' => $current->AttributeSets->children('ns2')->ItemAttributes->Title,
唯一具有ns2名称空间的项是ItemAttributes和Title。
如何更正此问题以便获取标题信息? 感谢
答案 0 :(得分:1)
ns2
是前缀,而不是实际的命名空间,ListMatchingProductsResponse
是根节点,不需要提及它,所以:
var_dump(
$parsed_xml->ListMatchingProductsResult
->Products
->Product
->AttributeSets
->children('ns2',true)
->ItemAttributes
->Title);