Question

当国家/地区名称（例如<Country name="US">）与XML结果中的用户所在国家/地区匹配时，我尝试获取name，PreviewUrl，Description等的值，如下所示：

<Offers>
   <Offer Id="656">
     <Name>The Hobbit Android</Name>
     <Platform>Android Smartphone & Tablet</Platform>
     <DailyCap>63</DailyCap>
     <PreviewUrl>https://play.google.com/store/apps/details?id=com.kabam.fortress</PreviewUrl>
     <TrackingUrl>http://ads.ad4game.com/www/delivery/dck.php?offerid=656&zoneid=7711</TrackingUrl>
     <Description>The battle for Middle-earth has just begun! PLAY FOR FREE and join thousands worldwide to drive ..</Description>
     <RestrictedTraffic> Social traffic (facebook, etc), Social traffic (facebook, etc) Email MarketingM, Brand Bidding</RestrictedTraffic>
     <Countries>
       <Country name="US">
         <OptIn>SOI</OptIn><Rate>$3.75</Rate>
         <EndDate>2013-09-15 16:47:12</EndDate>
       </Country>
     </Countries>
   </Offer>
 </Offers>

当我尝试下面的php代码时，我将所有节点连接成一个单独的字符串。当国家/地区名称匹配时，如何将名称，PreviewUrl，Description等作为单个字符串获取？

$xmldoc = new DOMDocument();
        $xmldoc->load('http://traffic.ad4game.com/www/admin/offers-api.php');

        $xpathvar = new Domxpath($xmldoc);



        $queryResult = $xpathvar->query('//Country[@name="US"]/../..');

        foreach($queryResult as $result){
                echo $result->nodeValue;
        }

编辑：至于预期的输出，我希望在获得单个字符串后，我希望它是这样的：

<div id="offer656">
<a href="http://ads.ad4game.com/www/delivery/dck.php?offerid=656&zoneid=7711">
The Hobbit Android</a><br />The battle for Middle-earth has just begun! PLAY FOR FREE and join thousands worldwide to drive .. 
</div>

Answer 1

首先，您需要遍历xpath查询的所有子元素，因此最后添加$sql = "UPDATE {$this->recipientDbTable} SET {$this->recipientDbColumn['result_id']} = '{$hash}' WHERE {$this->recipientDbColumn['id']} = {$this->emailId}";。

其次，将/*结果传递到一个数组，您可以在其中下标各个字符串（即nodeValue，$value[0]，...）或运行$value[1]循环数组：

foreach

Answer 2

使用DOMXpath::evaluate()而不是DOMXPath::query()。这两种方法看起来可能相同，但evaluate()支持返回标量的Xpath表达式。方法的第二个参数是上下文。因此，您可以迭代offer节点并使用其他Xpath表达式来获取详细信息：

$xmldoc = new DOMDocument();
$xmldoc->load('http://traffic.ad4game.com/www/admin/offers-api.php');

$xpath = new Domxpath($xmldoc);
$offers = $xpath->evaluate('//Offer[Countries/Country[@name="US"]]');

foreach($offers as $offer){
  var_dump(
    [
      'name' => $xpath->evaluate('string(Name)', $offer),
      'previewUrl' => $xpath->evaluate('string(PreviewUrl)', $offer)
    ]
  );
}

如何在使用$ xpathvar-＆gt;查询时获取单个xml子节点？

2 个答案: