DomXPath 选择

发布于 2024-12-13 15:14:59 字数 410 浏览 0 评论 0原文

我在使用 DomXPath 选择我需要的内容时遇到问题。我有一个像我想要的结构

<div id="a">
  Something
    <nobr> Inside </nobr>
</div>

，只选择“某物”而不是“内部”。我知道如何仅选择“内部”或同时选择两者，例如 //div[@id='a'] 然后调用 $obj->nodeValue，但我找不到只选择“某事”的方法。有人能帮我解决这个问题吗？谢谢。

编辑：如果 Something 更改为 Something 123456，您能否也给我一个提示，如何仅选择数字值作为 123456 作为奖励？

原文

I have a problem with the DomXPath for selecting what I need. I have a structure like

<div id="a">
  Something
    <nobr> Inside </nobr>
</div>

What I want is to select only 'Something' not 'Inside'. I know how to select only 'Inside' or both of them in the same time like //div[@id='a'] and then call $obj->nodeValue, but I couldn't find a way to select only 'Something'. Could anyone help me about this?
Thanks.

Edit: If Something is changed to Something 123456 can you also give me a hint how to select only numeric values as 123456 as a bonus?

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再可℃爱ぅ一点好了 2024-12-20 15:14:59

在xpath中定位文本节点内的数字是相当繁重的。相反，您可以使用 PHP 中的正则表达式来解析文本节点的文本以获取值：

$doc = new DomDocument;
$doc->loadXML($xml);
$xpath = new DOMXPath($doc);
$text = $xpath->query("/div[@id='a']/child::text()")->item(0)->nodeValue;
$r = preg_match('~\d+~', $text, $matches);
list($number) = $matches;

演示

To locate the number inside the text node in xpath is quite heavy. Instead you can use a regular expression in PHP to parse the textnode's text to obtain the value:

$doc = new DomDocument;
$doc->loadXML($xml);
$xpath = new DOMXPath($doc);
$text = $xpath->query("/div[@id='a']/child::text()")->item(0)->nodeValue;
$r = preg_match('~\d+~', $text, $matches);
list($number) = $matches;

Demo

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