Cron Authentification Digest Symfony - symfony

Question

My website is on an Infomaniak cloud server.
I can create a cron task with Authentification Digest.
So I made a Method "updateAction()" that update my database.
If I run this method in my browser (http://site1.com/update/), then I authenticate with my username and password. (It works and the database is updated)
I create a cronjob in my "Infomaniak Cloud Server" with Digest Authentication and the URL : http://site1.com/update/
I obtain this mail notification :
Cron name : Update
Date : 19/01/2018 16:51:18
Url : https://site1.com/update/
Result : OK
Detail : 204
Reponse : No response
So, the HTTP response is "204 : No content"
And my database is not updated.
Could you help me ?
So the solution is :
$url="http://site1.com/update/";
define('USERNAME','user');
define('PASSWORD','12345');
$ch=null;
try
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($ch, CURLOPT_USERPWD, USERNAME . ":" . PASSWORD);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
$resp = curl_exec($ch);
}
catch(Exception $ex)
{
}