calling functions to form menus

Greetings, Got a tiny problem that I'm unable to figure out. In one file I've written two functions, one which forms the table layout for the page, and another which forms the links that make up the menu side of the table. In the page that calls the functions I've tried assigning the output of the Menu() function to a variable $menu and insert it into the main page. require("FormatPage.php"); $menu = Menu(); $title ="stuff"; $header="more stuff"; MainPage($title, $header, $menu); The menu does not get placed inside the table of MainPage, instead it's formed above the table. Other than that the functions work fine. Is there any way to assign the output of a function to a single variable and place it inside the table where it's supposed to be? Thanks.