Using SERVER['REQUEST_URI'] and GET in controlling the website flow - php

Question

I have a small website. It's .htaccess file is like this:
RewriteEngine On
RewriteBase /site/
RewriteRule ^(.+)$ index.php [QSA,L]
So it redirects all the URLs to 'index.php'. I can get the requested URL and act accordingly :
$uri = $_SERVER['REQUEST_URI'];
switch($uri)
{
case 'index':
LoadIndex();
break;
case 'about':
LoadAbout();
break;
case 'Posts':
LoadPosts();
break;
default:
LoadNotFound();
}
Say I want to use $_GET[] in Index page. That changes the URL, so it fails to load the page.
How can I do that? How can I route my site without affecting $_GET[] variables in URLs?

Answer 1

$_SERVER[REQUEST_URI] will be /index.php and not index. $_SERVER[REQUEST_URI] also includes the QUERY_STRING. So, it might be /index.php?var1=abc&var2=def.
If you need only the URI path, try PHP_SELF or SCRIPT_NAME. But keep in mind, that these will be /index.php too, including / and .php.
$uri = $_SERVER['PHP_SELF'];
switch($uri)
{
case '/index.php':
LoadIndex();
break;
...
}
You don't need QSA in your RewriteRule. From RewriteRule Directive
Modifying the Query String
By default, the query string is passed through unchanged.
This means, the $_GET variable is available in your PHP script as before.