overloading?

Is there any way to overload in php? I believe that's what I'm looking to do. I want to call a method in my class to print a block of text, with the ability to insert certain variables, rather than the defaults, should I include them in the in function call. For example, I could call: $object->header(); // for the defaults or $object->header("Page Title"); // to replace the default Page Title with the words "Page Title" is this possible? any help would be greatly appreciated...