Document SensitiveParameter attribute in callbacks

[Sjord]

Affected page

https://www.php.net/manual/en/curl.constants.php

Current issue

E.g. CURLOPT_SSH_HOSTKEYFUNCTION:

The callback must have the following signature:

function callback(
resource $curlHandle,
int $keyType,
string $key,
int $keyLength
): int

Suggested improvement

I think it would be better if it said #[\SensitiveParameter]string $key.

Additional context (optional)

PHP: SensitiveParameter - Manual

[jordikroon]

Related: #5631