php curl进行digest认证

Question

调用api时需要进行digest认证，代码和错误信息如下：
$curl=curl_init();
curl_setopt($curl,CURLOPT_URL,$url);
curl_setopt($curl,CURLOPT_HTTPAUTH,CURLAUTH_DIGEST);
curl_setopt($curl,CURLOPT_USERPWD,$username.":".$password);
$data=curl_exec($curl);
echo $data;

HTTP Status 401 - Response realm name {0} does not match system realm name of {1}

是还需要设置realm吗？应该如何设置呢？

Answer 1

CURLOPT_USERNAME

分开写..