计算属于多个父级的 XML 文档中的子级总数答案

【问题标题】：Count the total number of children in an XML document belonging to multiple parents计算属于多个父级的 XML 文档中的子级总数
【发布时间】：2017-05-04 08:34:49
【问题描述】：

假设以下 XML：

<Record>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>            
 </PersonDetails>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>   
 </PersonDetails>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>   
    <OtherRelatedDetails>
       <OtherDetails>
          <Other>
             <core:AuthNum>3761626</core:AuthNum>                    
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>A</core:AuthType>
             <core:Name>ABC</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
          <Other>
             <core:AuthNum>4383908</core:AuthNum>
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>B</core:AuthType>
             <core:Name>DEF</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
          <Other>
             <core:AuthNum>8103583</core:AuthNum>
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>C</core:AuthType>
             <core:Name>GHI</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
       </OtherDetails>
    </OtherRelatedDetails>
 </PersonDetails>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>                        
 </PersonDetails>
  <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>   
    <OtherRelatedDetails>
       <OtherDetails>
          <Other>
             <core:AuthNum>9698550</core:AuthNum>                    
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>A</core:AuthType>
             <core:Name>ABC</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
          <Other>
             <core:AuthNum>8483953</core:AuthNum>
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>B</core:AuthType>
             <core:Name>DEF</core:Name>
             <core:Num>3205355</core:Num>
          </Other>          
       </OtherDetails>
    </OtherRelatedDetails>
 </PersonDetails>
</Record>

我想统计一下，发现XML文档中有5 <Other>标签。

我已经能够统计<OtherDetails>标签的数量（答案是2）如下：

if (!empty($Record->PersonDetails->OtherRelatedDetails->OtherDetails)) {

    foreach ($Record->PersonDetails->OtherRelatedDetails->OtherDetails as $NumberOfOtherDetails) {

        $theNumberOfOthers = $NumberOfOtherDetails->count(); //returns 2
    }
}

只要我尝试向下计数到<Other> 标签级别，它就会返回 0。我有什么办法可以克服这个问题吗？

【问题讨论】：

显示你加载xml内容的代码
@BernardV 希望我的帖子能帮到你...
@RomanPerekhrest 我加载如下：$theXML = new SimpleXMLElement($stringBody);

标签： php xml simplexml domdocument

【解决方案1】：

试试这个最简单的。

Try this code snippet here

<?php

ini_set('display_errors', 1);
libxml_use_internal_errors(true);
$domObj= new DOMDocument();
$domObj->loadXML('<Record>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>            
 </PersonDetails>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>   
 </PersonDetails>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>   
    <OtherRelatedDetails>
       <OtherDetails>
          <Other>
             <core:AuthNum>3761626</core:AuthNum>                    
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>A</core:AuthType>
             <core:Name>ABC</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
          <Other>
             <core:AuthNum>4383908</core:AuthNum>
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>B</core:AuthType>
             <core:Name>DEF</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
          <Other>
             <core:AuthNum>8103583</core:AuthNum>
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>C</core:AuthType>
             <core:Name>GHI</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
       </OtherDetails>
    </OtherRelatedDetails>
 </PersonDetails>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>                        
 </PersonDetails>
  <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>   
    <OtherRelatedDetails>
       <OtherDetails>
          <Other>
             <core:AuthNum>9698550</core:AuthNum>                    
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>A</core:AuthType>
             <core:Name>ABC</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
          <Other>
             <core:AuthNum>8483953</core:AuthNum>
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>B</core:AuthType>
             <core:Name>DEF</core:Name>
             <core:Num>3205355</core:Num>
          </Other>          
       </OtherDetails>
    </OtherRelatedDetails>
 </PersonDetails>
</Record>');
print_r($domObj->getElementsByTagName("Other")->length);

解决方案 2： SimpleXMLElement Try this code snippet here

<?php


ini_set('display_errors', 1);
libxml_use_internal_errors(true);
$domObj= new SimpleXMLElement('<Record>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>            
 </PersonDetails>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>   
 </PersonDetails>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>   
    <OtherRelatedDetails>
       <OtherDetails>
          <Other>
             <core:AuthNum>3761626</core:AuthNum>                    
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>A</core:AuthType>
             <core:Name>ABC</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
          <Other>
             <core:AuthNum>4383908</core:AuthNum>
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>B</core:AuthType>
             <core:Name>DEF</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
          <Other>
             <core:AuthNum>8103583</core:AuthNum>
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>C</core:AuthType>
             <core:Name>GHI</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
       </OtherDetails>
    </OtherRelatedDetails>
 </PersonDetails>
 <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>                        
 </PersonDetails>
  <PersonDetails>
    <StuffA>050656770</StuffA>
    <StuffB>Stuff B Content</StuffB>
    <StuffC>Stuff C Content</StuffC>   
    <OtherRelatedDetails>
       <OtherDetails>
          <Other>
             <core:AuthNum>9698550</core:AuthNum>                    
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>A</core:AuthType>
             <core:Name>ABC</core:Name>
             <core:Num>3205355</core:Num>
          </Other>
          <Other>
             <core:AuthNum>8483953</core:AuthNum>
             <core:FromDate>2007-11-22</core:FromDate>
             <core:ToDate>9999-12-31</core:ToDate>
             <core:AuthType>B</core:AuthType>
             <core:Name>DEF</core:Name>
             <core:Num>3205355</core:Num>
          </Other>          
       </OtherDetails>
    </OtherRelatedDetails>
 </PersonDetails>
</Record>');
$count=0;
foreach($domObj->PersonDetails as $key => $object)
{
    if(isset($object->OtherRelatedDetails->OtherDetails->Other))
    {
        $count+=count($object->OtherRelatedDetails->OtherDetails->Other);
    }
}
echo $count;

【讨论】：

这确实有效，非常感谢 Sahil Gulati 但是现在我必须使用 DOMDocument 导入我的 XML，你相信有什么办法吗使用：SimpleXMLElement？谢谢！
谢谢@Sahil Gulati，我现在正在测试这个！
我一定会的，感谢您的帮助！（已经投票了！）
@BernardV 谢谢... :)
解决方案 1 和解决方案 2 都很好用，我将使用解决方案 2，谢谢！