当我尝试使用PHP访问JIRA REST API时,未经授权(401)

但是下面的代码不行.我得到未经授权(401)作为回信.是的,我已经检查并重新检查凭证是否有效.这是我的代码：

$username = 'username';
$password = 'psw';
$url = "https://mycompany.atlassian.net/rest/api/2/issue/XXX-123";

$curl = curl_init();
curl_setopt($curl,CURLOPT_USERPWD,"$username:$password");
curl_setopt($curl,CURLOPT_URL,$url);
curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);
curl_setopt($curl,CURLOPT_FOLLOWLOCATION,CURLOPT_SSL_VERIFYPEER,0);
curl_setopt($curl,CURLOPT_SSL_VERIFYHOST,0);

$result = curl_exec($curl);
echo $result;

有任何想法吗？