Help me put this into phpinesse!

["Brad Sumrall" <Brads@xxxxxxxxx>]

<?php

            ob_start();

            session_start();

            header("Cache-control: private");

            require("includes/configure.php");

 
$conn=mysql_connect(DB_SERVER,DB_SERVER_USERNAME,DB_SERVER_PASSWORD);

            mysql_select_db(DB_DATABASE) or die(mysql_error().": database
not available");                         

            $show="no";

            isset($_SESSION['userid']);

                        if $SESSION=NULL

                        include './phpbb/login_global.php'

 

            $show="yes";

?>

 

What am I missing?

 

Brad