Page to Front-Plugin

<?php 
/* 
Plugin Name: Page to Front 
Version: 1.0 
Plugin URI: http:/ /wordpress.org/ 
Description: Choose a page from the DB to display as the front page of your weblog. 
Author: Ryan Boren 
Author URI: http:/ /boren.nu
*/ 
//  Put the id of the page you want to display here. To find the page id,
//  go to Manage–>Pages in the admin UI and look at the ID column. 
$ptf_front_page = 2; 
function ptf_front_page($query_string) { 
global $ptf_front_page;  
$query = new WP_Query(); 
$query–>parse_query($query_string);
if ($query–>is_home) { 
$query_string = add_query_arg('page_id', $ptf_front_page, $query_string);
{ 
return $query_string;
{ 
add_filter('query_string', 'ptf_front_page'); 
?>