Can I use a function as the default value of an argument in another function? In the example below, I'm trying to use the Wordpress function `get_the_title()` as the default value:

```
function GetPageDepartment($department = get_the_title()) {
    return $department;
}

```

As is, the parentheses are causing a parse error. Is there a way around this, or would I have to pass the function value to a variable somewhere outside of the default values?

*I know the actual code here would be largely pointless as it just returns `get_the_title()`, but it's just as an example, as what I actually do with the argument isn't that relevant to the question.*