正在列出SimpleXml对象

Question

我正在尝试使用phpSimpleXml:列出一个XML文件

<Record>
<TestData>
<Status>Passed</Status>
<Date Year="2018" Month="1" Day="25" Hour="11" Min="41" Sec="24"/>
</TestData>
<ResultData>
<ResultItem ElementID="42">
<Status>Passed</Status>
<ResultItem ElementID="43">
<Status>Passed</Status>
</ResultItem>
</ResultItem>
<ResultItem ElementID="70">
<Status>Passed</Status>
<ResultItem ElementID="72" Version="1">
<Status>Passed</Status>
</ResultItem>
<ResultItem ElementID="100" Version="1">
<Status>Passed</Status>
</ResultItem>
</ResultItem>
</ResultData>
</Record>

这是我的php代码：

$xml = simplexml_load_file ('20000.xml');
foreach ($xml->Record->ResultData as $element) { 
foreach ($element as $key => $val) {
echo $val['ElementID'].' '.$key.'</br>';
foreach ($xml->Record->ResultData->ResultItem as $element1) { 
foreach ($element1 as $key1 => $val1) {     
echo '- '.$val1['ElementID'].' '.$key1.'</br>';  
}            
}          
}
}  

这就是我得到的：

42 ResultItem-状态-43结果项-状态-72结果项-100 ResultItem70结果项-状态-43结果项-状态-72结果项-100 ResultItem

这是我希望拥有的：

42 ResultItem-状态-43结果项70结果项-状态-72结果项-100 ResultItem

错误在哪里？

如何区分foreach循环中的两个"Record->ResultData->ResultItem"，因为它们都有两个不同值的"ElementID"属性？

Answer 1

根据提供的xml结构，您可以执行以下操作：

foreach ($xml->Record->ResultData as $element) { 
foreach ($element as $key => $val) {
echo $val['ElementID'].' '.$key.PHP_EOL;
// iterate over children of current element `$val`
foreach ($val as $key1 => $element1) { 
if ($key1 === 'Status') {
echo '- '.$key1.PHP_EOL;  
} elseif ($key1 === 'ResultItem') {
echo '- '.$element1['ElementID'].' '.$key1.PHP_EOL;  
}            
}          
}
}