Error: Access denied for user 'cookie'@'localhost' (using password: NO)

[Jordann]

Title says it all, Below is my connection code.

PHP Code:

<?php   

    define('DB_NAME', 'user_name');         
    define('DB_USER', 'db_name');           
    define('DB_PASSWORD', 'password');  
    define('DB_HOST', 'localhost');  

        $conn = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD) or die ('Error connecting to mysql');
        mysql_select_db(DB_NAME);
?>

Can anyone see why im getting this error?

I have access to the databse, and the user and pass im using are correct and its still not working :\

[Fou-Lu]

Double check your actual DB_PASSWORD and password settings for it. According to the error, you are denied and not providing it with a password.
Another thing to watch for is localhost versus % username settings. These are two separate users, so user@localhost isn't the same as user@domain.