PHP to answer HEAD requests

[Dan Field <dof@xxxxxxxxxxx>]

Is it possible to use PHP to answer HEAD http requests? Is it as  
simple as doing something like:

header('blah')
exit;

I'd expect PHP to produce a full page rather than just a header though.

--
Dan Field <dof@xxxxxxxxxxx>                   Ffôn/Tel. +44 1970 632 582
Peiriannydd Meddalwedd                          Senior Software Engineer
Llyfrgell Genedlaethol Cymru                   National Library of Wales