manipulate PHP domdocument string

Question

I want to remove the element tag in my domdocument html.

I have something like

this is the <a href='#'>test link</a> here and <a href='#'>there</a>.

I want to change my html to

this is the test link here and there.

My code

 $dom = new DomDocument();
 $dom->loadHTML($html);
 $atags=$dom->getElementsByTagName('a');

 foreach($atags as $atag){
     $value = $atag->nodeValue;
//I can get the test link and there value but I don't know how to remove the a tag.                              
     }

Thanks for the help!

You are looking for a method called DOMNode::replaceChild(). — hakre
– hakre, Commented Aug 27, 2013 at 21:25

hakre · Accepted Answer · 2013-08-27 21:29:43Z

1

You are looking for a method called DOMNode::replaceChild().

To make use of that you need to create a DOMText of the $value (DOMDocument::createTextNode()) and also getElementsByTagName return a self-updating list, so when you replace the first element and then you go to the second, there is no second any longer, there is only one a element left.

Instead you need a while on the first item:

$atags = $dom->getElementsByTagName('a');
while ($atag = $atags->item(0))
{
    $node = $dom->createTextNode($atag->nodeValue);
    $atag->parentNode->replaceChild($node, $atag);
}

Something along those lines should do it.

answered Aug 27, 2013 at 21:29

hakre

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2 Comments

hek2mgl Over a year ago

I've tried almost the same but wondered why only the first <a> tag will be replaced while yours is working. The type of while loop you are using did the trick! nice

hakre Over a year ago

@hek2mgl: Yes, that's the one note I wrote: lists by getElementsByTagName are automatically updating to all current elements with that tagname. If you remove one element of those, the list changes.

Farkie · Accepted Answer · 2013-08-27 21:34:24Z

0

You could just use strip_tags - it should do what you've asked.

<?php

$string = "this is the <a href='#'>test link</a> here and <a href='#'>there</a>.";

echo strip_tags($string);

// output: this is the test link here and there.

answered Aug 27, 2013 at 21:34

Farkie

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