phpinfo page doesn't display anything

Hello, I need to change something in my php.ini file, and in searching for where it is, I found three. So, to find the real one, I made a page that only has this in it: <? phpinfo(); ?> and called it info.php. Well, when I bring up that page, it's completely blank. Any ideas? -Jody Cleveland Winnefox Library System Computer Support Specialist cleveland@mail.winnefox.org