Error connecting to MySQL

[draugluin]

grrrrrrrrrr....

I'm sure, I've forgotten something easy.

Hi together,

sorry for my horrible english, it's not my first language.

I have this error warning :

Warning: mysql_connect(): Access denied for user ''@'localhost' (using password: NO) in /var/www/clients/client161/web331/web/adoptables/inc/functions.php on line 152 Error connecting to MySQL

line 152:

$conn = mysql_connect($GLOBALS['localhost'], $GLOBALS['my-db'], $GLOBALS['draugi-passwort']) or die ('Error connecting to MySQL');

why ???

thank you for your help