mod_rewrite - PHP: $_GET not complete

Question

I have the following mod_rewrite:

Options +FollowSymLinks
RewriteEngine On

RewriteRule ^register index.php?page=register

The url looks like th

Answer 1

Set the QSA flag to have the original query appended to the new one:

RewriteRule ^register index.php?page=register [QSA]