I'm trying to use the func_get_args() function to retrieve all optional arguments passed to a function, but always receive the following error message

Fatal error: func_get_args(): Can't be used as a function parameter in /wwwdocs/htdocs/walk.php on line 9

I get the same error message for the example given in the documentation.

Is this a known bug for PHP4 RC1 (which I'm using)?

Cheers, Jakob.