.htaccess将子域重定向到ssl网站

Question

I want to let my site http://subdomain.domain.com redirect to another external SSL-encrypted domain https://subdomain.external.com , while keeping the original address in the browsing bar. As far as I know, it is possible with CNAME to do this very easily, but the problem is that it redirects to the external link without SSL encryption.

I have been told that this can be done with .htaccess file, which right now has the following contents:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

Can you help me know how should I modify the .htaccess file to meet my requirement? Thank you very much!

Juan

Answer 1

If you want to do it with PHP:

$redirect = "https://www.ssl.com".$_SERVER['REQUEST_URI'];
header("Location: $redirect");
exit;

Then you have to route all requests to this PHP file via .htaccess:

RewriteEngine on
RewriteRule ^([^.]+)$ index.php [QSA]