Support CURLOPT_ECH

Description

Not sure, if this is really a bug. It is more like a question if this is a bug

The following code:

<?php
$curl = curl_init('https://php.net');
curl_exec($curl);

$error = curl_getinfo($curl, CURLINFO_OS_ERRNO);
echo $error.' "'.curl_strerror($error).'"'.PHP_EOL;

curl_close($curl);

Resulted in this output (with cURL >=8.10):

101 "ECH attempted but failed"

But I expected this output instead (with cURL <8.10):

0 "No error"

Seems like a cURL issue and not an issue with the wrapper, but cURL provides the CURLOPT_ECH to configure it, which the PHP wrapper does not. So I am a bit stuck. Do I have to treat errors differently depending on the cURL version I use or is there any possibility to configure the behavior here?
The CURLOPT_ECH documentation (see above) says the default setting is off, which does not seem to be true here. Is this an issue with cURL or with the wrapper changing the default somehow?

PHP Version

PHP 8.3.12

Operating System

No response

Start with the PHP cURL wrapper's handling of libcurl options and the CURLOPT_ECH documentation, then reproduce the reported CURLINFO_OS_ERRNO behavior across the stated cURL versions. Determine whether the wrapper can expose this option without changing libcurl defaults. Done means ECH behavior is configurable as requested and the issue's version-dependent error behavior is covered by appropriate tests.