使用SERVER ['REQUEST_URI']和GET来控制网站流量

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.