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Question

php dom get all attributes of a node

Answer 1

A:

The attributes property could help.

Roberto Aloi 2010-03-05 10:12:22

Answer 2

+1 A:

Use this code, it will give you the specified attributes.

 

<html>
<script>
function test()
{
getvalue=document.getElementById("iid").getAttribute("align")
alert ( getvalue) ;
}
</script>

<body>
<p id=iid align="center" background="red" onclick="test();" >
This is for testing
php dom get all attributes of a node
</p>
</body>
</html>

Now when you click the conent of the p tag . It will show you align attirbute values.

pavun_cool 2010-03-05 10:17:56

Question is tagged PHP, not JavaScript, so the OP probably wants to do this server side.

Gordon 2010-03-05 10:20:09

Doesn't this simply display the value of the align attribute when clicking on the element?

Roberto Aloi 2010-03-05 10:21:40

@Gordon: Good spot. @alin: Could you clarify and (in case) adjust the tags?

Roberto Aloi 2010-03-05 10:23:15

@pavun_cool: i wanted to get all attributes without having a list and guessing which one is present. and in php not js. the below code pascal provided works like a charm

alin 2010-03-05 12:07:34

Answer 3

+2 A:

Considering you have your node as a DOMElement or DOMNode, you can use the $attributes property of the DOMNode class : it contains a list of the attributes that the node has.

Using that property, you can loop over the attributes, getting the name and value of each one, with their $nodeName and $nodeValue properties.

For instance, in your case, you could use something like this :

$str = <<<STR
<p align=center style="font-size: 12px;">some text</p>
<a href="#" target="_blank">some link<a/>
STR;

$dom = new DOMDocument();
$dom->loadHTML($str);

$p = $dom->getElementsByTagName('p')->item(0);
if ($p->hasAttributes()) {
  foreach ($p->attributes as $attr) {
    $name = $attr->nodeName;
    $value = $attr->nodeValue;
    echo "Attribute '$name' :: '$value'<br />";
  }
}

Which would get you this kind of output :

Attribute 'align' :: 'center'
Attribute 'style' :: 'font-size: 12px;'

i.e. we have the two attributes of the node, without knowing their names before ; and for each attribute, we can obtain its name and its value.

Pascal MARTIN 2010-03-05 11:23:14

thanks. this is working great. i wasn't aware of the attributes property

alin 2010-03-05 12:08:10

You're welcome :-) Have fun !

Pascal MARTIN 2010-03-05 12:18:29

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