Question

我有一个xml文件，它包含以下几行：

<myphotos_grid grid="true"><![CDATA[<rows>
  <row rowID="1">
    <rowAttribute>
      <theName>photo-name</theName>
      <value/>
    </rowAttribute>
    <rowAttribute>
      <theName>photo-credit</theName>
      <value>my credit</value>
    </rowAttribute>
    <rowAttribute>
      <theName>photo</theName>
      <value>
      <attachment id="1009343343"/>
      </value>
    </rowAttribute>
  </row>
  <row rowID="2">
    <rowAttribute>
      <theName>photo-name</theName>
      <value/>
    </rowAttribute>
    <rowAttribute>
      <theName>photo-credit</theName>
    <value/>
    </rowAttribute>
    <rowAttribute>
      <theName>photo</theName>
      <value>
      <attachment id="4432434344"/>
      </value>
    </rowAttribute>
  </row>
</rows>]]></myphotos_grid>

我正在通过PHP函数路径读取xml节点值。我想得到<value>节点文本值，其<thename>兄弟节点文本值是photo-credit。我想获得照片信用值。请帮帮我。

PHPcode我试图解析

$this->xpath('myphotos_grid/rows/row/rowattribute/value')

但是我知道我的代码是错误的，因为它需要CDATA并且它应该取值其slibling节点的文本值是照片信用，我是新手，请帮助

Answer 1

你需要免费使用＆＃39;首先是CDATA中的xml，然后使用xpath()：

$xml = simplexml_load_string(simplexml_load_string($x)); 
// assume your original XML in $x
$credits = $xml->xpath("//rowAttribute[theName = 'photo-credit']/value");

迭代数组$credits以回显值：

foreach ($credits as $credit) 
    echo $credit . PHP_EOL;

看到它正常工作：https://eval.in/169617

Answer 2

~~奇怪的是，它不适用于通常的事情：~~

$xml = simplexml_load_string($xml_string, 'SimpleXMLElement', LIBXML_NOCDATA);

请改用：

$xml_string = '<myphotos_grid grid="true"><![CDATA[<rows> <row rowID="1"> <rowAttribute> <theName>photo-name</theName> <value/> </rowAttribute> <rowAttribute> <theName>photo-credit</theName> <value>my credit</value> </rowAttribute> <rowAttribute> <theName>photo</theName> <value> <attachment id="1009343343"/> </value> </rowAttribute> </row> <row rowID="2"> <rowAttribute> <theName>photo-name</theName> <value/> </rowAttribute> <rowAttribute> <theName>photo-credit</theName> <value/> </rowAttribute> <rowAttribute> <theName>photo</theName> <value> <attachment id="4432434344"/> </value> </rowAttribute> </row></rows>]]></myphotos_grid>';
$doc = new DOMDocument();
$doc->loadXML($xml_string);
$xml_nodes = $doc->textContent;
$xml = new SimpleXMLElement($xml_nodes);
$value = $xml->xpath('//rowAttribute/theName[contains(.,"photo-credit")]/following-sibling::value/text()')[0];
echo (string) $value; // my credit

在PHP中查找其slibing具有特定值的xml节点的值

2 个答案: