I just needed to put a line in /usr/local/etc/portaudit.conf and regenerate
portaudit db.
from portaudit.conf:
# this vulnerability has been fixed in your FreeBSD version
portaudit_fixed="edabe438-542f-11db-a5ae-00508d6a62df"
and then:
portaudit -Fda && portupgrade php4
Done :)
I found solution at: http://ezine.daemonnews.org/200501/freebsd_apps.html
Thanks anyway,
Dominik