How to remove question mark using mod_rewrite?

Question

PHP

Hello, tell me, please, the code :)
You need such a transformation of the link:
from - site.ru/?id123
to - site.ru/id123
I read about rewrite. But I don't seem to understand :D Give me a hint, at least please :)

Answer 1

Like this:

RewriteCond %{QUERY_STRING} ^(id123)$
RewriteRule ^ /%1? [L,R=301]

Answer 2

#RewriteEngine on
#RewriteRule ^menu/([^/\.]+)/?$ menu.php?id=$1 [L]
#RewriteRule ^art/([^/\.]+)/?$ art.php ?id=$1[L]