I'm returning different responses (and HTTP status codes) using header function for different outcomes in my code. The code seems to work perfectly fine in localhost and sends HTTP codes accordingly but keeps on returning 'HTTP/1.1 200 OK' from WHM Server for every other outcome.

To make it more clear, I'm sharing a snippet of my code where a response is set and sent once the server receives an empty json packet..

PHP Version : 7.4

My Code:

header($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server', true, 500);
echo json_encode(array(
     "msg" => "no data found"
));

Localhost Response:

Localhost Response on POSTMAN

WHM Server Response:

WHM Server Response on POSTMAN

Has anyone come across such an issue before? It's been a whole day since I'm searching for a solution but couldn't find any...