SimpleXML解析嵌套名称空间 - PHP

Question

我在解析名为“q0：”的嵌套名称空间中的标记时存在一个小问题，位于下方。

//Tag that I am trying to parse 
    <q0:CustomerTransactionId> 

由于某些原因，我能够找到所有的“v12：”名称空间标签，但不是“q0：”。

谢谢！

这里是XML

<?xml version="1.0" encoding="UTF-8"?> 
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"> 
<env:Header 
     xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/> 
<soapenv:Body> 
<v12:ProcessShipmentReply 
    xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:v12="http://fedex.com/ws/ship/v12"> 
    <v12:HighestSeverity>ERROR</v12:HighestSeverity> 
    <v12:Notifications> 
     <v12:Severity>ERROR</v12:Severity> 
     <v12:Source>ship</v12:Source> 
     <v12:Code>3058</v12:Code> 
     <v12:Message>Recipient Postal code or routing code is required</v12:Message> 
     <v12:LocalizedMessage>Recipient Postal code or routing code is required</v12:LocalizedMessage> 
    </v12:Notifications> 
    <q0:TransactionDetail xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:q0="http://fedex.com/ws/ship/v12"> 
     <q0:CustomerTransactionId>21445634</q0:CustomerTransactionId> 
    </q0:TransactionDetail><q0:Version xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:q0="http://fedex.com/ws/ship/v12"> 
    <q0:ServiceId>ship</q0:ServiceId> 
    <q0:Major>12</q0:Major> 
    <q0:Intermediate>0</q0:Intermediate> 
    <q0:Minor>0</q0:Minor> 
    </q0:Version> 
    </v12:ProcessShipmentReply> 
    </soapenv:Body> 
    </soapenv:Envelope> 

这里是我的解析

$xml = simplexml_load_string($result, NULL, NULL, 'http://schemas.xmlsoap.org/soap/envelope/'); 
    $xml->registerXPathNamespace('env', 'http://schemas.xmlsoap.org/soap/envelope/'); 
    $xml->registerXPathNamespace('v12', 'http://fedex.com/ws/ship/v12'); 
    $xml->registerXPathNamespace('q0', 'http://fedex.com/ws/ship/v12'); 

    $bodies = $xml->xpath('env:Body'); 

    foreach($bodies as $body){ 

     $reply = $body->children('v12', TRUE)->ProcessShipmentReply; 
     $reply2 = $body->children('q0', TRUE)->TransactionDetail; 

     $custInfoArr['status'] = (string) $reply->HighestSeverity; 

     if(strtolower($custInfoArr['status'])=="error"){ 


      $custInfoArr['invoiceNum'] = (string)$reply2->CustomerTransactionId; 
      $custInfoArr['notificationSeverity']= (string) $reply->Notifications->Severity; 
      $custInfoArr['notificationSource']= (string) $reply->Notifications->Source; 
      $custInfoArr['notificationCode']= (string) $reply->Notifications->Code; 
      $custInfoArr['notificationMessage']= (string) $reply->Notifications->Message; 
      $custInfoArr['notificationLocalizedMessage']= (string) $reply->Notifications->LocalizedMessage; 

     } 

     $custInfoArr['trackingCode'] = (string) $reply->CompletedShipmentDetail->CompletedPackageDetails->TrackingIds->TrackingNumber; 
     $custInfoArr['labelCode'] = (string) $reply->CompletedShipmentDetail->CompletedPackageDetails->Label->Parts->Image; 
     $custInfoArr['labelCode'] = base64_decode($custInfoArr['labelCode']); 

    } 

Answer 1

<q0:TransactionDetail>不是<env:Body>一个孩子，这是<v12:ProcessShipmentReply>一个孩子，所以你需要在$reply内部寻找它，而不是$body：$reply2 = $reply->children('q0', TRUE)->TransactionDetail;

要记住的重要一点是，->TagName运营商和->children()方法只查看特定节点的直接子女，他们没有像XPath那样进行“深度搜索”。

事实上，前瞻性，既​​和q0:是同一个命名空间（“http://fedex.com/ws/ship/v12”）的别名，所以下一行可以只是$reply2 = $reply->TransactionDetail。如果你只是说$reply = $body->children('http://fedex.com/ws/ship/v12')->ProcessShipmentReply而不是依赖别名，这变得更清晰（并且更安全，因为这些别名可能会改变）。顺便说一下，除非你用它来做其他事情，你也可以摆脱所有的XPath代码（包括所有的registerXPathNamespace调用），并且只写$body = $xml->children('http://schemas.xmlsoap.org/soap/envelope/')->Body（我敢肯定，SOAP只允许一个Body信息）。