Как настроить редирект с /index.php?do=lastnews?

DirectoryIndex index.php
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/index\.(.+)$
RewriteRule .+ yoursite.ru/ [R=301,L]

if (substr ( $_SERVER['REQUEST_URI'], - 1, 1 ) != '/' ) {    
    $re_url = explode ( "index.php", strtolower ( $_SERVER['PHP_SELF'] ) );
    $re_url = reset ( $re_url );

    header("HTTP/1.0 301 Moved Permanently");
    header("Location: {$re_url}{$do}/");
    die("Redirect");
}