Come usare BABEL

<ul>
  <li><a href="http://127.0.0.1/xampp/modxr/" class="it active">Italian</a></li><li><a href="http://127.0.0.1/xampp/modxr/en/" class="en">English</a></li>
</ul>
SITO ITALIANO

# MODX supports Friendly URLs via this .htaccess file. You must serve web
# pages via Apache with mod_rewrite to use this functionality, and you must
# change the file name from ht.access to .htaccess.
#
# Make sure RewriteBase points to the directory where you installed MODX.
# E.g., "/modx" if your installation is in a "modx" subdirectory.
#
# You may choose to make your URLs non-case-sensitive by adding a NC directive
# to your rule: RewriteRule ^(.*)$ index.php?q=$1 [L,QSA,NC]

RewriteEngine On
RewriteBase /xampp/modxr/



# Rewrite www.domain.com -> domain.com -- used with SEO Strict URLs plugin
#RewriteCond %{HTTP_HOST} .
#RewriteCond %{HTTP_HOST} !^127\.0\.0\.1/xampp/modxr [NC]
#RewriteRule (.*) http://127.0.0.1/xampp/modxr$1 [R=301,L]
#
# or for the opposite domain.com -> www.domain.com use the following
# DO NOT USE BOTH
#
#RewriteCond %{HTTP_HOST} .
#RewriteCond %{HTTP_HOST} !^127\.0\.0\.1/xampp/modxr [NC]
#RewriteRule (.*) http://127.0.0.1/xampp/modxr$1 [R=301,L]



# Rewrite secure requests properly to prevent SSL cert warnings, e.g. prevent 
# https://www.domain.com when your cert only allows https://secure.domain.com
#RewriteCond %{SERVER_PORT} !^443
#RewriteRule (.*) https://127.0.0.1/xampp/modxr$1 [R=301,L]



# The Friendly URLs part
# detect language when requesting the root (/)
RewriteCond %{HTTP:Accept-Language} !^ [NC]
RewriteRule ^$ / [R=301,L]

# redirect all requests to /en/favicon.ico
# to /favicon.ico
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(en)/favicon.ico$ favicon.ico [L,QSA]
 
# redirect all requests to /en/assets* to /assets*
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(en)/assets(.*)$ assets$2 [L,QSA]
 
# redirect all other requests to /en/*
# to index.php and set the cultureKey parameter
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(en)?/?(.*)$ index.php?cultureKey=$1&q=$2 [L,QSA]
    

# Make sure .htc files are served with the proper MIME type, which is critical
# for XP SP2. Un-comment if your host allows htaccess MIME type overrides.

#AddType text/x-component .htc



# If your server is not already configured as such, the following directive
# should be uncommented in order to set PHP's register_globals option to OFF.
# This closes a major security hole that is abused by most XSS (cross-site
# scripting) attacks. For more information: http://php.net/register_globals
#
# To verify that this option has been set to OFF, open the Manager and choose
# Reports -> System Info and then click the phpinfo() link. Do a Find on Page
# for "register_globals". The Local Value should be OFF. If the Master Value
# is OFF then you do not need this directive here.
#
# IF REGISTER_GLOBALS DIRECTIVE CAUSES 500 INTERNAL SERVER ERRORS :
#
# Your server does not allow PHP directives to be set via .htaccess. In that
# case you must make this change in your php.ini file instead. If you are
# using a commercial web host, contact the administrators for assistance in
# doing this. Not all servers allow local php.ini files, and they should
# include all PHP configurations (not just this one), or you will effectively
# reset everything to PHP defaults. Consult www.php.net for more detailed
# information about setting PHP directives.

#php_flag register_globals Off



# For servers that support output compression, you should pick up a bit of
# speed by un-commenting the following lines.

#php_flag zlib.output_compression On
#php_value zlib.output_compression_level 5



# The following directives stop screen flicker in IE on CSS rollovers. If
# needed, un-comment the following rules. When they're in place, you may have
# to do a force-refresh in order to see changes in your designs.

#ExpiresActive On
#ExpiresByType image/gif A2592000
#ExpiresByType image/jpeg A2592000
#ExpiresByType image/png A2592000
#BrowserMatch "MSIE" brokenvary=1
#BrowserMatch "Mozilla/4.[0-9]{2}" brokenvary=1
#BrowserMatch "Opera" !brokenvary
#SetEnvIf brokenvary 1 force-no-vary

# detect language when requesting the root (/)
RewriteCond %{HTTP:Accept-Language} !^(it|en|fr) [NC]
RewriteRule ^$ fr/ [R=301,L]
RewriteRule ^$ en/ [R=301,L]
RewriteRule ^$ it/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(fr|en|it)/favicon.ico$ favicon.ico [L,QSA]

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(fr|it|en)/assets(.*)$ assets$2 [L,QSA]

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(fr|it|en)/media(.*)$ media$2 [L,QSA]

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(fr|it|en)/template(.*)$ template$2 [L,QSA]

RewriteCond %{HTTP:Accept-Language} !^(it|en) [NC]
RewriteRule ^$ it/ [R=301,L]
RewriteRule ^$ en/ [R=301,L]

RewriteCond %{HTTP:Accept-Language} !^ [NC]
RewriteRule ^$ / [R=301,L]

<?php
if($modx->context->get('key') != "mgr"){
    /* grab the current langauge from the cultureKey request var */
    switch ($_REQUEST['cultureKey']) {
        case 'en':
            /* switch the context */
            $modx->switchContext('en');   
            break;
        case 'fr':
            /* switch the context */
            $modx->switchContext('fr');
            break;
  
        default:
            /* Set the default context here */
            $modx->switchContext('web');
            break;
    }
    /* unset GET var to avoid
     * appending cultureKey=xy to URLs by other components */
    unset($_GET['cultureKey']);
}