PHP使用XPath查找有价值的标签

问题描述：

How can I use XPath to get the value of <FL val="Account Owner"> by searching for the <FL val="Account Name"> tag?

I've been using the following PHP / XPath code:

$aan = "Company A";
$ContRow = "/results/Accounts/row['FL val=\"Account Name\"'='".$aan."']";
foreach ($Cxml->xpath($ContRow) as $Crow)
  {
    $ao = $Crow->FL[1];
    echo $ao."<br />";
  }

and the XML code:

<result>
    <Accounts>
        <row no="1">
            <FL val="Account Name">
                <![CDATA[Company A]]>
            </FL>
            <FL val="Account Owner">
                <![CDATA[Owner's Name]]>
            </FL>
        </row>
    </Accounts>
</result>

如何使用XPath获取＆lt; FL val =“帐户所有者”＆gt;的值通过搜索＆lt; FL val =“帐户名称”＆gt; 我一直在使用以下PHP / XPath代码： p>

  $ aan =“Company A”; 
 $  ContRow =“/ results / Accounts / row ['FL val = \”Account Name \“'='”。$ aan。“']”; 
foreach（$ Cxml-＆gt; xpath（$ ContRow）as $ Crow）  
 {
 $ ao = $ Crow-＆gt; FL [1]; 
 echo $ ao。“＆lt; br /＆gt;”; 
} 
  code>  pre> 
 
  和XML代码： p> 
 
 
 ＆lt; result＆gt; 
＆lt; Accounts＆gt; 
＆lt; row no =“1”＆gt; 
＆lt; FL val  =“帐户名称”＆gt; 
＆lt;！[CDATA [公司A]]＆gt; 
＆lt; / FL＆gt; 
＆lt; FL val =“帐户所有者”＆gt; 
＆lt;！[CDATA [所有者的 名称]]＆gt; 
＆lt; / FL＆gt; 
＆lt; / row＆gt; 
＆lt; / Accounts＆gt; 
＆lt; / result＆gt; 
  code>  pre> 
  div>

答

The following expression will find every row that satisfies having an <FL val="Account Name"> descendant that contains "Company A" and then selects the <FL val="Account Owner"> element inside:

/result/Accounts/row[contains(FL[@val="Account Name"], "Company A")]/FL[@val="Account Owner"]

This expression should also do it:

/result/Accounts/row/FL[@val="Account Name" and contains(.,"Company A")]/following-sibling::FL

Example

$doc = new DOMDocument;
$doc->loadXml($xml);

$xpath = new DOMXPath($doc);

$res = $xpath->query('/result/Accounts/row[contains(FL[@val="Account Name"], "Company A")]/FL[@val="Account Owner"]');

foreach ($res as $node) {
        echo $node->nodeValue;
}

PHP使用XPath查找有价值的标签

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