$mng = new MongoDBDriverManager("mongodb://usernamer:password@localhost:27017/dbname");
$bulk = new MongoDBDriverBulkWrite;

$bulk->update(['username' => $username], ['username' => $username, 'useraddress' => $useraddress], ['upset' => 'true']);
$mng->executeBulkWrite("dbname.registration", $bulk);
$mng->executeBulkWrite("browser.online", $bulk);