<?php

$get = "test";
switch($get)  {  

    case '#filemanager' : $page = '
        <div class="innerbox">
            <p>Demo text for the file manager page</p>
        </div>'; break;

    case '#todo' : $page = '
        <div class="innerbox">
            <p>Demo text for the to-do page</p>
        </div>'; break;

    default: $page = '
        <div class="innerbox">
            <h1>ADMIN CONTROL PANEL</h1>
        </div>'; break;

}
echo $page;

        <div class="innerbox">
            <h1>ADMIN CONTROL PANEL</h1>
        </div>