exclude a file from htaccess redirection

in some cases, you need to exclude a file from being redirected....use "!" in htaccess file to exclude the file as,

RewriteEngine on
RewriteCond %{REQUEST_URI} !/filename.php
RewriteCond %{REQUEST_URI} ^/(.*).php
RewriteRule ^(.*).php /redirectfilename.php?fname=$1 [R]

for eg, if you want to redirect all the php file except index.php, then your redirect code will be,

RewriteEngine on
RewriteCond %{REQUEST_URI} !/index.php
RewriteCond %{REQUEST_URI} ^/(.*).php
RewriteRule ^(.*).php /test.php?fname=$1 [R]