在单个PHP XPath中读取两个子节点

我正在使用PHP XPath读取XML数据。我可以在单个Xpath中读取以下两行地址吗

<Address>
<FirstLine>Indiabulls Finance Centre Tower</FirstLine>
<SecondLine>Elphinstone Road</SecondLine>
</Address>

只需使用通配符*匹配地址的任何子级：

你也可以试试

string-join(//Address/*, " ")

---

要将这两个值作为单字符串Indiabulls Finance Center Tower Elphinstone Road获取，可以使用Xpath获取多个节点

组合两个备选位置路径/表达式 /地址/第一行|/地址/第二行 获取任意地址子元素节点 /地址/* 获取任意地址子元素节点并筛选它们 /地址/*[self:：FirstLine或self:：SecondLine] 对于SimpleXML，直接获取组合字符串是不可能的，但在DOM中是不可能的。SimpleXMLElement:：xpath只能返回由SimpleXMLElement对象表示的节点数组。evaluate可以返回标量

$xml = '<Address>
<FirstLine>Indiabulls Finance Centre Tower</FirstLine>
<SecondLine>Elphinstone Road</SecondLine>
</Address>';

$document = new DOMDocument();
$document->loadXml($xml);
$xpath = new DOMXpath($document);
$result = $xpath->evaluate("concat(/Address/FirstLine, '\n', /Address/SecondLine)");

var_dump($result);

---

我尝试了$xml->string join//cdt:Address/*；但它显示了错误连接：无效参数passedNo，我的意思是$xml->xpath'string-join//Address/*，'；SimpleXMLElement:：xpath:xmlXPathCompOpEval:未找到函数字符串concat我认为PHP xpath不支持字符串concat可能。。。第一个选项$xml->xpath'//Address/*'；怎么样；？

string-join(//Address/*, " ")

$xml = '<Address>
<FirstLine>Indiabulls Finance Centre Tower</FirstLine>
<SecondLine>Elphinstone Road</SecondLine>
</Address>';

$document = new DOMDocument();
$document->loadXml($xml);
$xpath = new DOMXpath($document);
$result = $xpath->evaluate("concat(/Address/FirstLine, '\n', /Address/SecondLine)");

var_dump($result);

string(48) "Indiabulls Finance Centre Tower
Elphinstone Road"