php same parameters different value - php

Question

I have a Wordpress plugin that when searching multiple types of cars ads multiple values of the same parameter in the url.
/home/?condition=filter1&condition=filter2&s=
Now I created multiple user roles for different cars and want to add a filter to the site.
This code works with 1 value
function wprdcv_param_redirect() {
$user = wp_get_current_user();
$url_parts = parse_url("http://".$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI']);
parse_str($url_parts['query'], $params);
if( ! empty( $user ) && count( array_intersect( [ "userrole1" ], (array) $user->roles ) ) ) {
//Prevent infinite loop
if ($_GET["condition"] == "filter1") return;
$params["condition"] = "filter1";
$params["s"] = "";
}
else {
//Prevent infinite loop
if ($_GET["condition"] == "") return;
$params["condition"] = "";
$params["s"] = "";
}
foreach (array_keys($_GET) as $n) {
$params[$n] = $_GET[$n];
}
// Note that this will url_encode all values
$url_parts['query'] = http_build_query($params);
wp_redirect(http_build_url($url_parts));
exit;
}
add_action('template_redirect', 'wprdcv_param_redirect');
When I add the following it offcourse overwrites the value and only shows the last one:
if ($_GET["condition"] == "filter1") return;
$params["condition"] = "filter1";
$params["condition"] = "filter2";
$params["s"] = "";
how can I edit this so it shows me 2 same parameters with different values?
EDIT:
I have adding following and it works like a charm!
$params["condition"][] = "Filter1";
$params["condition"][] = "Filter2";
Thx fellas! #CBroe & #Vincent Decaux
/home/?condition%5B0%5D=Filter1&condition%5B1%5D=Filter2&s= proves to be perfectly working