从 PHP 中的 XML 检索数据

Question

我无法访问 XML 文件中的某些嵌套数据。我可以使用 Item->ItemID 获取 'ItemID' 等数据，但我无法获取 'ItemSpecifics' 中的数据。

例如，我如何访问 ItemSpecifics 中的颜色或里程数？

我已经尝试了 Item->ItemSpecifics->Mileage 和 Item->ItemSpecifics[1]->Colour，但没有成功。

这就是 XML 的样子：

<?xml version="1.0" encoding="UTF-8"?>
<GetSingleItemResponse 
  xmlns="urn:ebay:apis:eBLBaseComponents">
  <Timestamp>2020-04-13T11:05:22.064Z</Timestamp>
  <Ack>Success</Ack>
  <Build>E1141_CORE_APILW_19170841_R1</Build>
  <Version>1141</Version>
  <Item>
    <ItemID>283814879195</ItemID>
    <EndTime>2020-04-14T13:58:36.000Z</EndTime>
    <ViewItemURLForNaturalSearch>https://www.ebay.co.uk/itm/MERCEDES-CL-CL55-Auto-CL55-AMG-Black-Semi-Auto-Petrol-2003-/283814879195</ViewItemURLForNaturalSearch>
    <ListingType>LeadGeneration</ListingType>
    <Location>Swindon</Location>
    <GalleryURL>https://thumbs4.ebaystatic.com/pict/2838148791958080_1.jpg</GalleryURL>
    <PictureURL>https://i.ebayimg.com/00/s/MTEyNVgxNTAw/z/XrkAAOSwO5Vd8Qph/$_1.JPG?set_id=880000500F</PictureURL>
    <PictureURL>https://i.ebayimg.com/00/s/MTEyNVgxNTAw/z/pasAAOSwJkFd8Qpg/$_1.JPG?set_id=880000500F</PictureURL>
    <PictureURL>https://i.ebayimg.com/00/s/MTEyNVgxNTAw/z/5lcAAOSwBi5d8Qph/$_1.JPG?set_id=880000500F</PictureURL>
    <PictureURL>https://i.ebayimg.com/00/s/MTEyNVgxNTAw/z/~dYAAOSwK~td8Qph/$_1.JPG?set_id=880000500F</PictureURL>
    <PictureURL>https://i.ebayimg.com/00/s/MTEyNVgxNTAw/z/xHsAAOSw3t1d8Qpg/$_1.JPG?set_id=880000500F</PictureURL>
    <PictureURL>https://i.ebayimg.com/00/s/MTEyNVgxNTAw/z/60wAAOSwWEdd8Qpg/$_1.JPG?set_id=880000500F</PictureURL>
    <PictureURL>https://i.ebayimg.com/00/s/MTEyNVgxNTAw/z/A3cAAOSwhYNd8Qpg/$_1.JPG?set_id=880000500F</PictureURL>
    <PrimaryCategoryID>9855</PrimaryCategoryID>
    <PrimaryCategoryName>Cars, Motorcycles &amp; Vehicles:Cars:Mercedes-Benz</PrimaryCategoryName>
    <BidCount>0</BidCount>
    <ConvertedCurrentPrice currencyID="GBP">4495.0</ConvertedCurrentPrice>
    <ListingStatus>Active</ListingStatus>
    <TimeLeft>P1DT2H53M14S</TimeLeft>
    <Title>MERCEDES CL CL55 Auto CL55 AMG Black Semi-Auto Petrol, 2003 </Title>
    <ItemSpecifics>
      <NameValueList>
        <Name>Previous owners</Name>
        <Value>4</Value>
      </NameValueList>
      <NameValueList>
        <Name>Colour</Name>
        <Value>Black</Value>
      </NameValueList>
      <NameValueList>
        <Name>Mileage</Name>
        <Value>146951</Value>
      </NameValueList>
      <NameValueList>
        <Name>Power</Name>
        <Value>360</Value>
      </NameValueList>
      <NameValueList>
        <Name>Engine Size</Name>
        <Value>5439</Value>
      </NameValueList>
      <NameValueList>
        <Name>Year</Name>
        <Value>2003</Value>
      </NameValueList>
      <NameValueList>
        <Name>Manufacturer</Name>
        <Value>Mercedes-Benz</Value>
      </NameValueList>
      <NameValueList>
        <Name>Model</Name>
        <Value>Other</Value>
      </NameValueList>
      <NameValueList>
        <Name>Body Type</Name>
        <Value>Other</Value>
      </NameValueList>
      <NameValueList>
        <Name>Doors</Name>
        <Value>2</Value>
      </NameValueList>
      <NameValueList>
        <Name>Seats</Name>
        <Value>4</Value>
      </NameValueList>
      <NameValueList>
        <Name>Transmission</Name>
        <Value>Semi-Automatic</Value>
      </NameValueList>
      <NameValueList>
        <Name>Fuel</Name>
        <Value>Petrol</Value>
      </NameValueList>
      <NameValueList>
        <Name>Reg. Date</Name>
        <Value>20030114</Value>
      </NameValueList>
      <NameValueList>
        <Name>MOT Expiry</Name>
        <Value>202006</Value>
      </NameValueList>
      <NameValueList>
        <Name>Reg. Mark</Name>
        <Value>**52 *** &lt;a target=&quot;_JumpPage&quot; href=&quot;http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewJumpPageForVehicleHistory&amp;vrm=Uk41MkVWUg%3D%3D&amp;vrm_d=**52 ***&quot;&gt;Get the Vehicle Status Report &lt;/A&gt;&lt;img src=&quot;http://pics.ebaystatic.com/aw/pics/uk/motors/vsr_logo_small.gif&quot; width=&quot;20&quot; height=&quot;20&quot; alt=&quot;VSR&quot; align=&quot;middle&quot; border=&quot;0&quot; &gt;</Value>
      </NameValueList>
    </ItemSpecifics>
    <Country>GB</Country>
    <AutoPay>false</AutoPay>
    <ConditionID>3000</ConditionID>
    <ConditionDisplayName>Used</ConditionDisplayName>
  </Item>
</GetSingleItemResponse>

Answer 1

您不会通过 Value（里程和颜色）来称呼它。你用 Key

来称呼它

Item->ItemSpecifics[0]->Name 应该 return Previous owners
Item->ItemSpecifics[0]->Value 应该 return 4

Answer 2

由于颜色在 name/value 元素的列表中，您最好使用 XPath 来搜索正确的对。由于 XML 有一个默认命名空间（xmlns="urn:ebay:apis:eBLBaseComponents" 位），您还必须注册它才能在 XPath 中使用前缀。

这使用 //d:NameValueList[d:Name="Colour"]，但它正在 <NameValueList> 列表中查找值为 Colour 的元素。 xpath() 始终是 returns 匹配列表，因此使用 [0] 获取第一个。这也给你 <NameValueList> 项目，所以使用 $colour[0]->Value...

$xml = simplexml_load_file($fileName);
$xml->registerXPathNamespace("d", "urn:ebay:apis:eBLBaseComponents");
$colour = $xml->xpath('//d:ItemSpecifics/d:NameValueList[d:Name="Colour"]');
echo $colour[0]->Value;

从 PHP 中的 XML 检索数据

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