[php] How to get PHP $_GET array?

When you don't want to change the link (e.g. foo.php?id=1&id=2&id=3) you could probably do something like this (although there might be a better way...):

$id_arr = array();
foreach (explode("&", $_SERVER['QUERY_STRING']) as $tmp_arr_param) {
    $split_param = explode("=", $tmp_arr_param);
    if ($split_param[0] == "id") {
        $id_arr[] = urldecode($split_param[1]);
    }
}
print_r($id_arr);