How can I get all attributes with PHP xpath? - php

Question

Given the following HTML string:
<div
class="example-class"
data-caption="Example caption"
data-link="https://www.example.com"
data-image-url="https://example.com/example.jpg">
</div>
How can I use PHP with xpath to output / retrieve an array with all attributes as key / value pairs?
Hoping for output like:
Array
(
[data-caption] => Example caption
[data-link] => https://www.example.com
[data-image-url] => https://example.com/example.jpg
)
// etc etc...
I know how to get individual attributes, but I'm hoping to do it in one fell swoop. Here's what I currently have:
function get_data($html = '') {
$dom = new DOMDocument();
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$nodes = $xpath->query('//div/#data-link');
foreach ($nodes as $node) {
var_dump($node);
}
}
Thanks!

Answer 1

In XPath, you can use #* to reference attributes of any name, for example :
$nodes = $xpath->query('//div/#*');
foreach ($nodes as $node) {
echo $node->nodeName ." : ". $node->nodeValue ."<br>";
}
eval.in demo
output :
class : example-class
data-caption : Example caption
data-link : https://www.example.com
data-image-url : https://example.com/example.jpg

Answer 2

I think this should do what you want - or at least, give you the basis to proceed.
define('BR','<br />');
$strhtml='<div
class="example-class"
data-caption="Example caption"
data-link="https://www.example.com"
data-image-url="https://example.com/example.jpg">
</div>';
$dom=new DOMDocument;
$dom->loadHTML( $strhtml );
$xpath=new DOMXPath( $dom );
$col=$xpath->query('//div');
if( $col ){
foreach( $col as $node ) if( $node->nodeType==XML_ELEMENT_NODE ) {
foreach( $node->attributes as $attr ) echo $attr->nodeName.' '.$attr->nodeValue.BR;
}
}
$dom = $col = $xpath = null;