php dom get all attributes of a node

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is there any easy way of getting all attributes of a node without checking if it has that attribute? short, here\'s an example of what i\'m trying to do: i have this short d

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别跟我提以往

2020-12-14 06:33
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.
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野趣味

2020-12-14 06:47

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.

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