Get div's HTML content via xpath [duplicate]

问题:

This question already has answers here:

How to get innerHTML of DOMNode? (8 answers)

Closed 6 years ago.

I need a support on the following issue, I have a website where I want to get a product descriptions via xpath. Below the example html of the content:

<div id="description">
 <span>some test</span>
 <img src="some src">
 <p>
  some content etc.
 </p>
</div>

and now I use the below code:

$result = $xpath->query('//div[@id="description"]');

but when I'm outputting the result with the below line:

echo "<pre>".$result->item( 0 )->nodeValue."</pre>"; // there is always only one element

what I get is only unformatted: "some testsome content etc." with no spaces and other tags. I know it is because xpath treats all the other tags as nodes but...

I there a way to get the div's content as HTML ?

回答1:

Hey I did something similar a while back and this post helped me:

PHP DOMDocument / XPath: Get HTML-text and surrounded tags

It is a bit of overhead in your code, I mean if you thought (like me) it could be solved in one line with a different XPath query or something...

Hope it helped

回答2:

DOM Document is SLOOOOOW

Why cant you do this with a regular expression?

i would do this:

// put everything on one line $content = preg_replace("!\r\n!", "", $content);

preg_match("!(.*?)!", $content, $matches);

the above will search for and then takes everything up until the first

Based on the HTMl above this will work. but not if you have other tags within the HTML