使用PHP名称空间循环XML

我有一个xml curl响应，如下所示：

<ns2:categorys xmlns:ns2="http://skt.tmall.business.openapi.spring.service.client.domain">
    <ns2:category>
        <depth>1</depth>
        <dispengnm>Women Clothing</dispengnm>
        <dispnm>Pakaian Wanita</dispnm>
        <dispno>1</dispno>
        <parentdispno>0</parentdispno>
    </ns2:category>
    <ns2:category>
        <depth>2</depth>
        <dispengnm>Dresses &amp; Suits</dispengnm>
        <dispnm>Gaun &amp; Terusan</dispnm>
        <dispno>2</dispno>
        <parentdispno>1</parentdispno>
    </ns2:category>
</ns2:categorys>

---

在循环数据之前，需要将

getNamespaces

设置为

true

，在循环中需要调用children函数，以便它获取数据并将其包装到对象变量中

$return = curl_exec($ch);

$return= simplexml_load_string($return);
$categories = $return->children('ns2', true);
echo "<pre>";
var_dump(count($categories)); 
foreach ($categories as $category) {
  print_r($category->depth);
}

int(2)
SimpleXMLElement Object
(
)
SimpleXMLElement Object
(
)

$return = simplexml_load_string($return);
$ns = $return->getNamespaces(true);

foreach ($return->children($ns['ns2'])->category as $key) {
  $data = $key->children();
  echo  $data->depth;
}