Php Simple Html - 如何将DOM转换为元素

问题描述：

I'm using PHP Simple HTML DOM Parser library in my project, but I can't figure out how to make a method working.

First I convert a string into a DOM object:

$html = str_get_html($rarr[$i]);

the $rarr variable is an array of html string elements. I want to remove their class and title attributes, so I use the following code:

$html = $html->removeAttribute('class');
$html = $html->removeAttribute('title');

but I get the following error:

Fatal error: Call to undefined method simple_html_dom::removeAttribute() in /scripts/defios.php on line 198

According to Documentation, the str_get_html() Creates a DOM object from a string. and I think the removeAttribute() method is not a DOM method but an Element method and that's why I get the error. So I need to convert somehow the DOM to Element. I think the find() method would do the job, but the problem is that I can't use it because the html elements in the array are randomly (some are divs, spans and they don't have a common class or id), so the method doesn't really help me. More the DOM itself is the element so I do not want to select something inside the DOM but to convert the entire DOM to an Element.

All I need to do is to remove that class and title, so any help would be appreciated.

我在我的项目中使用PHP Simple HTML DOM Parser code>库，但我可以弄清楚如何使方法有效。 p>

首先我将字符串转换为DOM对象： p>


  $ html = str_get_html  （$ rarr [$ i]）; 
  code>  pre> 
 
   $ rarr  code>变量是一个html字符串元素数组。 我想删除他们的 class  code>和 title  code>属性，所以我使用以下代码： p> 
 
 
  $ html = $ html  - ＆gt; removeAttribute（'class'）; 
 $ html = $ html-＆gt; removeAttribute（'title'）; 
  code>  pre> 
 
 但是我收到以下错误 ： p> 
 
 
 
  致命错误 strong>：在 /scripts/defios.php中调用未定义的方法simple_html_dom :: removeAttribute（） strong  >在线 198  strong>  p> 
  blockquote> 
 
 
根据文档， str_get_html（） code> 从字符串创建一个DOM对象。 em>我认为 removeAttribute（）   code>方法不是DOM方法，而是Element方法，这就是我得到错误的原因。 所以我需要以某种方式将DOM转换为Element。 我认为 find（） code>方法可以完成这项工作，但问题是我无法使用它，因为数组中的html元素是随机的（有些是div，spans，它们不是 有一个共同的类或id），所以这个方法并没有真正帮助我。  DOM本身就是元素，所以我不想在DOM中选择一些内容，而是将整个DOM转换为元素。 p> 
 
 
我需要做的就是删除该类和 标题，所以任何帮助将不胜感激。 p> 
  div>

答

Here's how I would remove those:

foreach($html->find('[class]') as $el) $el->removeAttribute('class');
foreach($html->find('[title]') as $el) $el->removeAttribute('title');

答

The key is to access the children attribute: Take a look at the following example and tweak it to work!

    $html = str_get_html($rarr[$i]);
    foreach($html as $e)
    {
        $tag = $e->children[0]; // get the outer most element
        $tag->removeAttribute('class');
        $tag->removeAttribute('title');
    }

Php Simple Html - 如何将DOM转换为元素

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