How do I handle SSL certificate errors alongside a PHP curl error 60?

While error 60 primarily indicates a connection problem, it can sometimes be related to SSL certificate issues. If curl is trying to connect to an HTTPS server with an invalid or untrusted certificate, it may result in a connection failure. You can use `curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);` (use with caution!) or provide the path to a CA certificate file to resolve these issues. However, disabling SSL verification is generally not recommended for security reasons.