Redirect 301 in htaccess with url using schema file based (fancy)

# BEGIN PunBB

# ----------------------------------------------------------------------
# Start rewrite engine
# ----------------------------------------------------------------------

<IfModule mod_rewrite.c>
    # MultiViews interfers with proper rewriting
    Options -MultiViews

    RewriteEngine On

    # Uncomment and properly set the RewriteBase if the rewrite rules are not working properly
    RewriteBase /myfolder

    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule . rewrite.php [L]
</IfModule>

# ----------------------------------------------------------------------
# Better website experience for IE users
# ----------------------------------------------------------------------

# Force the latest IE version, in various cases when it may fall back to IE7 mode
# github.com/rails/rails/commit/123eb25#commitcomment-118920
# Use ChromeFrame if it's installed for a better experience for the poor IE folk

<IfModule mod_setenvif.c>
     <IfModule mod_headers.c>
        BrowserMatch MSIE ie
        Header set X-UA-Compatible "IE=Edge,chrome=1" env=ie
      </IfModule>
</IfModule>

<IfModule mod_headers.c>
    # Because X-UA-Compatible isn't sent to non-IE (to save header bytes),
    # We need to inform proxies that content changes based on UA
      Header append Vary User-Agent
    # Cache control is set only if mod_headers is enabled, so that's unncessary to declare
</IfModule>


# ----------------------------------------------------------------------
# UTF-8 encoding
# ----------------------------------------------------------------------

# Use UTF-8 encoding for anything served text/plain or text/html
AddDefaultCharset utf-8

# Force UTF-8 for a number of file formats
AddCharset utf-8 .html .css .js .xml .json .rss


# ----------------------------------------------------------------------
# A little more security
# ----------------------------------------------------------------------

# Do we want to advertise the exact version number of Apache we're running?
# Probably not.
## This can only be enabled if used in httpd.conf - It will not work in .htaccess
# ServerTokens Prod


# "-Indexes" will have Apache block users from browsing folders without a default document
# Usually you should leave this activated, because you shouldn't allow everybody to surf through
# every folder on your server (which includes rather private places like CMS system folders).
<IfModule mod_autoindex.c>
    Options -Indexes
</IfModule>

# END PunBB

<?php
/**
 * Rewrites SEF URLs to their actual files.
 *
 * @copyright (C) 2008-2012 PunBB, partially based on code (C) 2008-2009 FluxBB.org
 * @license http://www.gnu.org/licenses/gpl.html GPL version 2 or higher
 * @package PunBB
 */


define('FORUM_ROOT', './');
require FORUM_ROOT.'include/essentials.php';

// Bring in all the rewrite rules
if (file_exists(FORUM_ROOT.'include/url/'.$forum_config['o_sef'].'/rewrite_rules.php'))
    require FORUM_ROOT.'include/url/'.$forum_config['o_sef'].'/rewrite_rules.php';
else
    require FORUM_ROOT.'include/url/Default/rewrite_rules.php';

// Allow extensions to create their own rewrite rules/modify existing rules
($hook = get_hook('re_rewrite_rules')) ? eval($hook) : null;

// If query string is not set properly, create one and set $_GET
// E.g. lighttpd's 404 handler does not pass query string
if ((!isset($_SERVER['QUERY_STRING']) || empty($_SERVER['QUERY_STRING'])) && strpos($_SERVER['REQUEST_URI'], '?') !== false)
{
    $_SERVER['QUERY_STRING'] = parse_url('http://'.$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI']);
    $_SERVER['QUERY_STRING'] = isset($_SERVER['QUERY_STRING']['query']) ? $_SERVER['QUERY_STRING']['query'] : '';
    parse_str($_SERVER['QUERY_STRING'], $_GET);
}

// We determine the path to the script, since we need to separate the path from the data to be rewritten
$path_to_script = str_replace('\\', '/', dirname($_SERVER['SCRIPT_NAME']));
if (substr($path_to_script, -1) != '/')
    $path_to_script = $path_to_script.'/';

// We create our own request URI with the path removed and only the parts to rewrite included
$request_uri = substr(urldecode($_SERVER['REQUEST_URI']), strlen($path_to_script));
if (strpos($request_uri, '?') !== false)
    $request_uri = substr($request_uri, 0, strpos($request_uri, '?'));

$rewritten_url = '';
$url_parts = array();
// We go through every rewrite rule
foreach ($forum_rewrite_rules as $rule => $rewrite_to)
{
    // We have a match!
    if (preg_match($rule, $request_uri))
    {
        $rewritten_url = preg_replace($rule, $rewrite_to, $request_uri);
        $url_parts = explode('?', $rewritten_url);

        // If there is a query string
        if (isset($url_parts[1]))
        {
            $query_string = explode('&', $url_parts[1]);

            // Set $_GET properly for all of the variables
            // We also set $_REQUEST if it's not already set
            foreach ($query_string as $cur_param)
            {
                $param_data = explode('=', $cur_param);

                // Sometimes, parameters don't set a value (eg: script.php?foo), so we set them to null
                $param_data[1] = isset($param_data[1]) ? $param_data[1] : null;

                // We don't want to be overwriting values in $_REQUEST that were set in POST or COOKIE
                if (!isset($_POST[$param_data[0]]) && !isset($_COOKIE[$param_data[0]]))
                    $_REQUEST[$param_data[0]] = urldecode($param_data[1]);

                $_GET[$param_data[0]] = urldecode($param_data[1]);
            }
        }
        break;
    }
}

// If we don't know what to rewrite to, we show a bad request messsage
if (empty($rewritten_url))
{
    define('FORUM_HTTP_RESPONSE_CODE_SET', 1);
    header('HTTP/1.1 404 Not Found');

    // Allow an extension to override the "Bad request" message with a custom 404 page
    ($hook = get_hook('re_page_not_found')) ? eval($hook) : null;

    error('Page Not found (Error 404):<br />The requested page <em>'.forum_htmlencode($request_uri).'</em> could not be found.');
}

// We change $_SERVER['PHP_SELF'] so that it reflects the file we're actually loading
$_SERVER['PHP_SELF'] = str_replace('rewrite.php', $url_parts[0], $_SERVER['PHP_SELF']);

require FORUM_ROOT.$url_parts[0];

RewriteCond %{QUERY_STRING} ^blabla$
RewriteRule ^index\.php$ [url]http://mydomain.com/topicxx-my-subject.html[/url]? [L,R=301] 

RewriteCond %{QUERY_STRING} ^blabla$
RewriteRule ^rewrite\.php$ [url]http://mydomain.com/topicxx-my-subject.html[/url]? [L,R=301] 

Redirect 301 /blabla http://mydomain.com/topicxx-my-subject.html

RedirectPermanent /blabla http://mydomain.com/topicxx-my-subject.html