redirect url based on a string match htaccess

Question

There are hundreds of urls are returning with server error. Here is the example url

http://www.example.com/index.php?option=com_nap&format=raw&view=googlemapshow&vw_name=tabbed_compact&pid=12196

If I see an url with a string value as "com_nap", i need to redirect to my sub domain.

The above url should be redirected to

http://subdomain.example.com/index.php?option=com_nap&format=raw&view=googlemapshow&vw_name=tabbed_compact&pid=12196

How can I do that in htaccess.

regards, Raja

Vugario · Accepted Answer · 2012-11-13 16:31:09Z

1

I assume your webserver runs apache and has the mod_rewrite enabled?
In this case, you could match the QUERY_STRING (part behind the ? mark) against a regular expression.

Like so:

<IfModule mod_rewrite.c>
  RewriteEngine On
  RewriteCond %{QUERY_STRING} ^option=com_nap [NC]
  RewriteRule ^ http://subdomain.example.com%{REQUEST_URI} [R=301,L]
</IfModule>

1) You turn on the Rewrite Engine if its available
2) You check the QUERY_STRING wether it starts with option=com_nap
3) You redirect with a 301 to the subdomain

answered Nov 13, 2012 at 16:31

Vugario

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