PHP XML和具有相同名称的节点。

I am having some difficulty wrapping my brain around this, since I am new to PHP.

由于我是PHP新手，所以我在这方面有点困难。

XML Document contains:

XML文档包含:

<containerDetails>
    <ID> theid </id>
     <OwnerDetails id = 23212>
          <name> the name </name>
     </OwnerDetails>
     <OtherData> 
           asdfdsa
     </OtherData>
</containerDetails>

And I can access The Owner Name via $current["OwnerDetails"]["Name"] ok

我可以通过$current["Owner details "]["Name"]来访问所有者名称

However sometimes there are multiple ownerdetails:

然而，有时也有多种所有权细节:

<containerDetails>
    <ID> theid </id>
     <OwnerDetails id = 23212>
          <name> the name </name>
     </OwnerDetails>
     <OwnerDetails id = 23233>
          <name> other name </name>
     </OwnerDetails>
     <OtherData> 
           asdfdsa
     </OtherData>
</containerDetails>

I can use a

我可以使用一个

foreach($current["OwnerDetails"] as $row) 
    echo $row["Name"]

and I see both names. But if there is only ONE OwnerDetails it won't display the name correctly.... How Do I reliably access this data even if I don't know if there will be one or multiple items?

我看到两个名字。但如果只有一个OwnerDetails它不会显示名字正确....我如何可靠地访问这些数据，即使我不知道是否会有一个或多个项目?

2 个解决方案

#1

The easiest way to deal with this might be something like the following, depending on your XML parsing library:

处理此问题的最简单方法可能是如下所示，具体取决于您的XML解析库:

// make sure you have an array containing OwnerDetails elements
$ownerDetails = isset($current["OwnerDetails"][0])
              ? $current["OwnerDetails"]
              : array($current["OwnerDetails"]);

// now iterate over it
foreach ($ownerDetails as $row) {
    echo $row["Name"];
}

However, SimpleXML can take care of this for you; SimpleXMLElement objects implement the Traversable interface, so you could use foreach in either scenario.

然而，SimpleXML可以为您解决这个问题;SimpleXMLElement对象实现了可遍历接口，因此您可以在任何一种场景中使用foreach。

#2

I'm not sure what XML parsing function you're using, so it's hard to debug its precise behaviour.

我不确定您使用的是什么XML解析函数，因此很难调试它的精确行为。

If you use SimpleXML, then foreach ( $current->OwnerDetails as $row ) should work in both cases. Similarly, both $current->OwnerDetails->Name and $current->OwnerDetails[0]->Name will get you the Name of the first child. SimpleXML overloads functionality to work smoothly in cases like this.

如果您使用SimpleXML，那么foreach ($current->OwnerDetails as $row)应该在这两种情况下都有效。同样，$current->OwnerDetails->名称和$current->OwnerDetails[0]->名称都将获得第一个孩子的名字。SimpleXML会重载功能，以便在这种情况下正常工作。

Note the -> notation (property access) to refer to a child node. In SimpleXML, the ['string'] notation accesses attributes, e.g. $current->OwnerDetails['id'].

请注意->符号(属性访问)来引用子节点。在SimpleXML中，['string']符号访问属性，例如$current->OwnerDetails['id']。

#1