User state custom pages - best way to assemble in php

I have a jqtouch website depending on if someone is logged in or not the pages change. At the moment I have a pretty ugly solution....

 function page1()
 {
     $page1 = '<div>.........</div>';
     return $page1;
 }

 function page2()
 {
     $page2 = '<div>.........</div>';
     return $page2;
 }

 function page3()
 {
     $page3 = '<div>.........</div>';
     return page3();
 }

etc....

to load the page I do the following

 echo page1() . page2() . page3();

or

 echo page1() . page3();

Depending on what the user state is.

I need to mix and match pages so I have all the pages in one main page and only really want to run the sql withing those pages should they be needed.

effectively I ha开发者_JAVA技巧ve a stack of cards and I want to put them together in various ways with out disturbing the unrequired ones.

How would you assemble the pages?

---

Use templates:

In page1.php

<div>You are logged in!</div>
include_once("common2.php");
<div>Do you want to logout?</div>

In page2.php

<div>Please login first!/div>
include_once("common2.php");
<div><a href="#">Login Here</a></div>

In common.php

<div>This is common to all pages</div>

In common2.php

<div>
  This is common to all pages but 
  it appears in the middle of the content of page1 and page 2
</div>

Then in your gateway page you do this:

include_once("common.tpl");

if($userIsLoggedIn)
{
  include_once("page1.tpl");
}
else
{
  include_once("page2.tpl");
}