No way to get the contents of a processing instruction in SimpleXML

[nielsdos]

Description

The following code:

<?php

$xml = <<<XML
<?xml version="1.0" encoding="utf-8"?>
<foo>
  <bar><?foo hello ?></bar>
</foo>
XML;

$sxe = simplexml_load_string($xml);

var_dump($sxe->xpath("//processing-instruction()")[0]->getName());
var_dump((string) $sxe->xpath("//processing-instruction()")[0]);

Resulted in this output:

string(3) "bar"
string(0) ""

But I expected this output instead:

string(3) "bar"
string(3) "hello"

PHP Version

8.1+

Operating System

Linux