解析eBay xml響應

Question

我想解析eBay網站的xml結構後，實現其API。我爲「categoryId」元素和「currentPrice」元素獲得了空值。請問我做錯了什麼。下面找到我的PHP代碼：

<?php 

// http get url *** 

$url =("http://svcs.sandbox.ebay.com/services/search/FindingService/v1?OPERATION-NAME=findItemsByKeywords&SERVICE-VERSION=1.0.0&SECURITY-APPNAME=Linkserv-9a06-4300-982e-769819b827e9&RESPONSE-DATA-FORMAT=XML&REST-PAYLOAD&keywords=shirts&paginationInput.entriesPerPage=20&paginationInput.pageNumber=1"); 

$xml = simplexml_load_file($url); 

foreach ($xml->searchResult->item as $entry){ 
echo $entry->itemId; 
echo $entry->title; 
echo $entry->categoryId; 
echo $entry->categoryName; 
echo $entry->viewItemURL; 
echo $entry->location; 
echo $entry->currentPrice; 

// Process XML file 
// Opens a connection to a PostgresSQL server 
$connection = pg_connect("dbname=postgres user=postgres password=xxxx"); 
$query = "INSERT INTO ebay(id, title, catid, category, image, location, price) VALUES ('" . $entry->itemId . "', '" . $entry->title . "', '" . $entry->categoryId . "', '" . $entry->categoryName . "', '" . $entry->viewItemURL . "', '" . $entry->location . "', '" . $entry->currentPrice . "')"; 

$result = pg_query($query); 
pg_close(); 
} 

?> 

感謝

Answer 1

可以嘗試：

echo $entry->primaryCategory->categoryId 
echo $entri->sellingStatus->currentPrice