I need to put a “201 Created” Response code and a Location header for a POST request, but for some reason I am still getting a 302 response.

This is what I have:

header('HTTP/1.1 201');
header("Location: ..."); // The new resource URL
header('Content-type: application/json; charset=utf-8');
echo $response;
exit;

I have tried removing the content type, the echo and the exit without any luck, still getting the 302. I read that I need to specify both headers, but that’s what I am doing and no luck. I also tried with:

header("Location: ...", TRUE, 201);

Nothing, still got 302

Does anybody knows what I am not seeing?

Thanks.