how to catch all $_GET variables which have certain value [duplicate]

I have many $_GET parameters in url which i want to filter.
Like:

?article=123456
?search=bill
?category=general

?add_article=1
?add_archive=1
?add_biography=1

I want to exclude all GET variables which have 1 as value

Instead of

if( $_GET['add_article'] != 1 && $_GET['add_archive'] != 1 && $_GET['add_biography'] != 1) {
// show content for other GET variables

I tried this:

if( array_values($_GET) != 1) {
// show content for other GET variables

But this does not work. How can i achieve this easyly?