clean_gpc in a php direct eval, how?

[janaf]

Elsewhere I posted a question on how to grab an argument i vB / php direct eval.
I also searched around in the documentation and find how to do. In the vBulletin manual
http://www.vbulletin.com/docs/html/codestandards_gpc
under $_GET / $_POST / $_REQUEST there is an example. My version:

PHP Code:

$vbulletin->input->clean_gpc('r', 'mystr', TYPE_STR); 


With this code only in a php direct eval page I get the error message:

Fatal error: Call to a member function clean_gpc() on a non-object in /var....../phpeval.php(97) : eval()'d code on line 1

So something is wrong so help please! I can not find any doc on the use of php direct eval pages.

And I am fairly new around here............

PS If anyone in charge is reading; in the vBulletin manual there is this code;

PHP Code:

$vbulletin->input->clean_array_gpc('p', array(
    'field_one' => TYPE_STR
    'field_two' => TYPE_NOHTML,
    'key_field' => TYPE_INT
)); 


looks like there is a comma missing after TYPE_STR