php SimpleXML 获取节点值
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SimpleXML get node value
提问by priktop
Say I have this following XML structure:
假设我有以下 XML 结构：
<?xml version="1.0" encoding="UTF-8"?>
<main>
<parent>
<child1>some value</child1>
<child2>another value</child2>
</parent>
</main>
I made a variable of the XML and now I want to get the values of child1, so I use SimpleXML:
我创建了一个 XML 变量，现在我想获取 child1 的值，所以我使用 SimpleXML：
$xml = new SimpleXMLElement($xml);
$this->xmlcode = (string) $xml->main->parent->child1;
But I get this message: Notice: Trying to get property of non-object in /x.php on line x
但我收到此消息：注意：尝试在第 x 行的 /x.php 中获取非对象的属性
I also tried it with $xml->parent->child1, but no success.
我也用 $xml->parent->child1 尝试过，但没有成功。
Anyone??
任何人？？
回答by vartec
$xml = new SimpleXMLElement($xml);
$this->xmlcode = (string) $xml->parent[0]->child1;
回答by Paul
A good example of using XPath with php for the SimpleXMLElement can be found here http://www.php.net/manual/en/class.simplexmlelement.php#95229
可以在此处找到将 XPath 与 php 用于 SimpleXMLElement 的一个很好的示例 http://www.php.net/manual/en/class.simplexmlelement.php#95229
// Find the topmost element of the domDocument
$xpath = new DOMXPath($xml);
$child1 = $xpath->evaluate('/main/parent/child1')->item(0);
