SimpleXMLElement find by attribute in array - php

Question

I'm trying to filter a node from a SimpleXMLElement which is what I receive, there's two nodes: Accessibility and Activity those properties are nested inside my $xml.
I need to get the node data of the node with the id of 'Activity', for example.
What I've tried
When I try $xml->symbol it returns the first element of the array that has my two elements, instead of the array
When I try $xml->children() it returns the exact same result as what is returned by '$xml'
Using Xpath test = $xml->xpath('/symbol'); This returns an empty array, so I don't know how I can look even deeper
The SimpleXml
object(SimpleXMLElement)#137 (1) {
["symbol"]=>
array(2) {
[0]=>
object(SimpleXMLElement)#135 (2) {
["#attributes"]=>
array(2) {
["viewBox"]=>
string(9) "0 0 24 24"
["id"]=>
string(13) "accessibility" <---------------
}
}
[1]=>
object(SimpleXMLElement)#142 (2) {
["#attributes"]=>
array(2) {
["viewBox"]=>
string(9) "0 0 24 24"
["id"]=>
string(8) "activity" <---------------
}
}
}
}
XML Source
<?xml version="1.0" encoding="utf-8"?>
<svg xmlns="http://www.w3.org/2000/svg">
<symbol viewBox="0 0 24 24" id="accessibility">
<path d="M2 16L2.8 14M6 16L5.2 14M5.2 14L4 11L2.8 14M5.2 14H2.8"/>
<path d="M20 13L22 10M20 13L18 10M20 13L20 16"/>
<path d="M8 12L10 10V16"/>
<path d="M13 12L15 10V16"/>
</symbol>
<symbol viewBox="0 0 24 24" id="activity">
<polyline points="21 14 18 14 15 7 10 17 7 11 5 14 3 14"/>
</symbol>
</svg>

Answer 1

To select symbol node with attribute id equal to "activity" try XPath
'//*[name()="symbol" and #id="activity"]'