Apache - How to redirect using qsa, Htaccess use QSA Query String Append

How to redirect using qsa

htaccess RewriteRule using QSA Query String Append

1) To replace a file with another file

http://www.w3calculator.com/index.php?col=red

with:

http://www.w3calculator.com/common.php?col=red

you can use [QSA] (Query String Append)

RewriteEngine On
RewriteRule ^index.php$ http://xxx.com/common.php [R=301,QSA,L]

2) To redirect a specific value

RewriteEngine On
RewriteCond %{QUERY_STRING} ^(red)$
RewriteRule ^index.php$ http://w3calculator.com/common.php?%1 [R=301,L]

3) To redirect a group of values

RewriteEngine On
RewriteCond %{QUERY_STRING} ^(red|blue)$
RewriteRule ^index.php$ http://w3calculator.com/common.php?%1 [R=301,L]

If the argument is red or blue then the file will be redirected.

The topic on Apache - How to redirect using qsa is posted by - Venki

Hope you have enjoyed, Apache - How to redirect using qsaThanks for your time