database conection

ok, i am having problems connecting to a database. i need help please

here is the code

[code=php]

<?

$host =”localhost”;
$username =”silvapro_franknu”;
$password =”abc123″;!
$database =”silvapro_prueba”;

// artist..

$artist_name = addslashes($artist_name);
$artist_release= addslashes($artist_release);
$artist_bio = addslashes($artist_bio);
$artist_news= addslashes($artist_news);
$artist_extra= addslashes($artist_extra);
$artist_picture= addslashes($artist_picture);

$db=mysql_connect (‘$host’, ‘$username’, ‘$password’) or die (‘I cannot connect to the database because: ‘ . mysql_error());

if(!$db)

{
echo ” Error: could not connect to database.”;

}

//business owner
$sql=”INSERT INTO `artist`(`artist_name`,`artist_release`,`artist_bio`,`artist_news`,`artist_extra`, `artist_picture`)
VALUES (‘”.$artist_name.”‘,'”.$artist_release.”‘,'”.$artist_news.”‘,'”.$artist_extra.”‘)”;

$result = mysql_query($sql);
echo mysql_error();

if($result)
{
echo mysql_affected_rows().” .artist information Inserted. <br>”;
}

?>

[/code]

the display i am getting is

Error: could not connect to database.

can anyone help and tell me why is not working

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