php getElementsByTagName具有特定属性 [英] php getElementsByTagName with specific attribute

问题描述

我认为这是第一个元素叫做< gallery>

  $ gallery = $ objDOM-> getElementsByTagName（'gallery'） - > item（0）; 
  

我试图获得< gallery name =Third>我想我需要一些相当于：

 
 code> $ gallery = $ objDOM-> getElementsByTagName（'gallery [@ name =Third]'） - > item; 
  

谢谢，Andy

解决方案

只能使用 DOMXPath ，例如

  $ xp = new DOMXPath（$ yourDOMDocument）; 
 $ nodes = $ xp-> query（'// gallery [@ name =Third]'）; 
  

或通过在调用$ code> getElementsByTagName // do something
}
}

I think this gets the first element called <gallery>

$gallery = $objDOM->getElementsByTagName('gallery')->item(0);

I'm trying to get <gallery name="Third">

I think I need something equivalent to:

$gallery = $objDOM->getElementsByTagName('gallery[@name="Third"]')->item;

Thanks, Andy

解决方案

This is only possible with DOMXPath, e.g.

$xp    = new DOMXPath($yourDOMDocument);
$nodes = $xp->query('//gallery[@name="Third"]');

or by iterating over the node list after the call to getElementsByTagName with

foreach ($objDOM->getElementsByTagName('gallery') as $gallery) {
    if($gallery->getAttribute('name') === 'Third') {
         // do something
    }
}

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