Integration of GetText and PHP

Hi!
I installed GetText via MacPorts
It is depended on by many other ports,
and I have PHP5 built from source.
How can i add Gettext Extension for PH5 ?
( Integration of GetText and PHP)
I try it: go to /etc and edit php.ini with editor and add this line:
extension_dir = "./"
extension=gettext.so
re-run appache and go to http://localhost/test and I can not see in PHP configuration
the line - GetText support enabled
( remark: gettext find in /opt/local/bin/gettext)