Question

I havea code that should redirect in case it doesnt have some request parameter set correctly.

          if(!is_numeric($_GET['id'])){
                         header("HTTP/1.0 404 Not Found");
                    header('Location: '.$url);
                    exit();
               }

Problem is that whenever I check with Firefoxes plugin, live HTTP headers, I see 302 temporary redirect. why is that? why no 404 response is given?

Answer 1

Problem is that whenever I check with Firefoxes plugin, live HTTP
headers, I see 302 temporary redirect. why is that? why no 404
response is given?

Not sure what you want to do here but following will provide your purpose.

if (! is_numeric($_GET['id'])) {
    header('Location: ' . $url, true, 404);
    exit();
}