PHP: Database Connection Class Constructor Method

Question

I\'m new to OOP. Originally I was defining variables and assigning values to them within the class and outside of the constructor, but after an OOP lesson in Java today, I was t

Answer 1

host,$this->username,$this->password))
            {
                echo "connection successfully";
            }
        }
        function db()
        {
            mysql_select_db($this->$dbname);
        }
    }

    $obj=new config();
?>