I transferred my files via FTP and database to a hosting service. I edited two files, settings.php and sites/default/settings.php whose content was originally the following.
$databases = array (
'default' =>
array (
'default' =>
array (
'database' => 'db',
'username' => 'loginname',
'password' => 'passwd',
'host' => 'localhost',
'port' => '',
'driver' => 'mysql',
'prefix' => '',
),
),
);
I changed the database name, username, password and host (to yes.domainname.com) in both files.
There is probably something wrong because I get this warning.
Warning: Cannot modify header information - headers already sent by (output started at /web/www/yes.domainname.com/sites/default/settings.php:1) in drupal_send_headers() (line 1044 of /web/www/yes.domainname.com/includes/bootstrap.inc).
Do you know what is wrong?