htaccess conditional for RequestHeader

Question

is it possible to have in .htaccess (Apache 2.2) a url condition that when met it executes the RequestHeader directive? Something like:

if ( %{HTTP_HOST} == "example.com" ){
  RequestHeader unset Set-Cookie
}

Answer 1

You can use mod_setenvif directive for this:

SetEnvIf Host ^(www\.)?example\.com$ NO_COOKIE
RequestHeader unset Set-Cookie env=NO_COOKIE