从php中的querystring中删除参数及其值

Question

i have the following redirect script.

i have a redirect script that uses a querystring param to know where do redirect to. would like to strip out the param and its value and rebuid the query-string before it redirects. so the referrer does not contain the param value.

this is my currently code.

  $check   = $_GET['param'];    
    function redirect($location) {
          header("Location: $location");
        exit;}

        if($_GET['param'] === '1'){
        redirect('http://domain.com/');
        }

Answer 1

Just unset it and then build it:

unset($_GET['param']);
$querystring = http_build_query($_GET);