Erreur: SQLSTATE[HY000] [1044]

Question

I'm using PDO for connect my DB with my form HTML for create advanced registration.

The problem is that I receive this error message:

Erreur: SQLSTATE[HY000] [1044] Access denied for user 'mysuser'@'%' to database 'advanced-registration'

I check the login info, everything is ok.

The database is hosted by OVH.

My code for connection:

try {

  $db = new PDO('mysql:host=myhost; dbname=advanced-registration','myuser', 'mypass');
  $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

  $db = null;
  } catch (PDOException $e) {
echo "Erreur: ".$e->getMessage()."<br/>";
  die();
 }