Page created in PHP not viewable by public

My friend created a page in wordpress which has nothing but php code. It begins with <? and ends with ?>. The problem is, non one can view the content on these pages except for me and anyone else who is a registered user/admin on the server. The code basically makes a connection to the database we made and outputs information contained in the database based on the sql queries we put in the code.

Is there a way we can make it so that guests can see the page as well and not just registered users/admins? All other pages that contain regular text and not code are seen perfectly by guests but not the pages containing php code.