get childs from the DOMElement class

[MMDE]

Heya

 

I'm a bit confused, there's probably an easy solution to this.

 

http://www.php.net/manual/en/class.domelement.php

The class has the methods: appendChild, hasChildNodes, removeChild and replaceChild.

What I really want to do is to get all it's childs, but of course are there no such method.

 

What I'm really doing is going through a HTML page and this one DOMElement, an anchor, only has an img tag in it's "nodeValue".

<a href="someurl.html"><img src="somepicture.gif" alt="some picture" /></a>

How do I check if the DOMElement of the anchor contains this img.

 

:s

 

-

MMDE

[requinix]

http://www.php.net/manual/en/class.domelement.php

The class has the methods: appendChild, hasChildNodes, removeChild and replaceChild.

What I really want to do is to get all it's childs, but of course are there no such method.

Because it's not a method.

foreach($node->childNodes as $child) {

[Jessica]

BTW the plural of child is children

[MMDE]

BTW the plural of child is children

 

I realized that after I posted it. Posted it in a hurry.

[MMDE]

http://www.php.net/manual/en/class.domelement.php

The class has the methods: appendChild, hasChildNodes, removeChild and replaceChild.

What I really want to do is to get all it's childs, but of course are there no such method.

Because it's not a method.

foreach($node->childNodes as $child) {

 

I didn't notice it extended DOMNode. lol

http://www.php.net/manual/en/class.domnode.php

 

Which has "public readonly DOMNodeList $childNodes ;".

I already tried looping through them as you suggested, but I got some strange error, but I guess I messed something up. o.O

I tried doing this:

$child->getAttribute('alt');

But I got this error:

Call to undefined method DOMText::getAttribute()

So the DOMNodeList it returns is a list of DOMText objects urgh.

http://www.php.net/manual/en/class.domtext.php

Which extends on DOMCharacterData

http://www.php.net/manual/en/class.domcharacterdata.php

Which in turn extends on DOMNode

http://www.php.net/manual/en/class.domnode.php

 

Urgh...

 

At least DOMNode has:

public readonly DOMNamedNodeMap $attributes ;

http://www.php.net/manual/en/class.domnamednodemap.php

 

How do I use this class?

 

I tried doing this:

		foreach($element->childNodes AS $child){
		echo $child->attributes->getNamedItem('alt')."\n";
	}

But got the error:

Call to a member function getNamedItem() on a non-object

 

EDIT:

I tried doing this instead:

		foreach($element->childNodes AS $child){
		print_r($child->attributes);
		echo "\n";
	}

And got no error, but it seems sometimes $child->attributes returns no object, so I guess I just gotta check if it does.

To check that I should probably use:

public bool hasAttributes ( void )

 

URGH...

$child->attributes->getNamedItem('alt')

returns a DOMAttr object... '

http://www.php.net/manual/en/class.domattr.php

I guess I'm getting closer now!!

[MMDE]

Solved it:

$elements = $domdocument->getElementsByTagName('a');
foreach($elements AS $element){
	foreach($element->childNodes AS $child){
		if($child->hasAttributes()){
			echo $child->attributes->getNamedItem('alt')->value."\n";
		}
	}
}