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

Commencez par le traitement des options de libcurl par le wrapper PHP cURL et par la documentation de CURLOPT_ECH, puis reproduisez le comportement signalé de CURLINFO_OS_ERRNO dans les versions de cURL indiquées. Déterminez si le wrapper peut exposer cette option sans modifier les valeurs par défaut de libcurl. Le travail est terminé lorsque le comportement de ECH est configurable comme demandé et que le comportement d’erreur dépendant de la version décrit dans l’issue est couvert par des tests appropriés.