ola galera encontrei uma pedra em meu caminho que nao consigo retirar

estou montando um sistema com url amigaveis que esta funcionando perfeitamente, so que preciso criar o link de afiliado e nao estou conseguindo alguem pode me dar uma luz segue os codigos

.htaccess

#------------------------------------------------------------------------------

This file provides server security limiting access to the localhost only.

Comment next four lines to deactivate. (Allows external access)

#------------------------------------------------------------------------------ Order Deny,Allow Deny from all Allow from 127.0.0.1 Allow from ::1 #------------------------------------------------------------------------------

To allow execution of cgi scripts in this directory uncomment next two lines.

#------------------------------------------------------------------------------. AddHandler cgi-script .bat .exe .pl .cgi Options +ExecCGI +FollowSymLinks

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?page=$1
</IfModule>

index.php

<?php
function getHome (){
 require_once('conexao/bd.php');
 $pdo = conectar();
 require_once('config/config.app.php');
 require_once('config/config.scripts.php');
 require_once('config/config.styles.php');

 $page = isset($_GET['page']) ? $_GET['page'] : 'index';
 $section = isset($_GET['section']) ? $_GET['section'] : 'index';
 $url = $_SERVER['REQUEST_URI'];
 $url = substr($url, 1);
 $url = ($url !='') ? $url: 'index';
 $url = explode('/', $url);
 if(file_exists('pages/'.$url[0].'.php')){
 include_once ('header.php');
 require_once('pages/'.$url[0].'.php');
 include ('footer.php');
 }elseif(is_dir('pages/'.$url[0])){
 if(isset($url[1]) && file_exists('pages/'.$url[0].'/'.$url)){
 include ('header.php');
 require('pages/'.$url[0].'.php');
 include ('footer.php');
 }else{
 require('pages/404.php');
 };
 }else{
 require('pages/404.php');
 };
};
getHome();
?>

desde ja obrigado a todos