PHP XML / HTML DOM使用空格获取CSS类属性 [英] PHP XML/HTML DOM get CSS class attribute with whitespace

问题描述

我遇到以下问题：
我使用PHP XML DOM解析器，当我解析现实世界的HTML时，很多元素的'class'属性都有空格，所以在实际上是这些元素的多个CSS类。但是，当我使用getAttribute（）查询DOMNode时，我只得到第一个类。

I've got the following problem: I'm using the PHP XML DOM parser and when I'm parsing real-world HTML, the 'class' attributes of many elements have spaces in them, so there are actually multiple CSS classes for these elements. However, when I query the DOMNode with getAttribute(), I'm getting only the first class.

我也尝试过PHP simplehtmldom，但是相同的结果。

I have also tried PHP simplehtmldom for the very same purpose, but to the same result.

此问题之前已经被问过，但是没有真正的回答：
PHP dom来获取具有多个css类名的标签类

This question has been asked here before, however not really answered: PHP dom to get tag class with multiple css class name

此解决方法在我的情况下不起作用。任何帮助将不胜感激：）

This workaround does not work in my case. Any help would be appreciated :)

另一个问题包含一个非常好的例子，我需要完成，以防任何人不明白我。

The other question contains a very good example of what I need to accomplish in case anyone did not understand me.

推荐答案

你可以尝试这个例子在你链接到的stackoveflow问题。为我工作：

You can try this for the example in the stackoveflow question you linked to. Works for me:

$body = // the html
$html = new DomDocument();
$html->loadHTML($body);
$as = $html->getElementsByTagName('a');

foreach($as as $a) { 
    if ($a->getAttribute('class')=='secondLink SecondClass') {
          // do something
    }
 } 

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