mysql connection error message

<?  
//by feha at www.vision.to  
ini_set('display_errors', '0');  
$link = mysql_connect("localhost", "user", "pass");  
if (mysql_errno() == 1040 OR mysql_errno() == 1203) {  
    define("DB_HOST", "some_ip:3306");//remote  
    define("DB_NAME", "db");  //database_name  
    define("DB_USER", "user"); //database user name  
    define("DB_PASSWORD","pass");  //database (user) password  
}  
else  
{  
    define("DB_HOST", "localhost");  
    define("DB_NAME", "db_name2");  //database_name  
    define("DB_USER", "user"); //database user name  
    define("DB_PASSWORD","pass");  //database (user) password  
}  
ini_set('display_errors', '1');  
  
?>