问题
Until now my php application assumed HTTP 1.1 everywhere. So I defined all headers like so:
header("HTTP/1.1 500 Internal Server Error");
But now my server also supports HTTP 2 and I want to update all header responses with the right HTTP status code.
How to I get the HTTP Protocol version of the http request?
(My webserver is nginx, but I guess it is irrelevant if I am using nginx or apache.)
回答1:
The server protocol should be available through SERVER_PROTOCOL from the server environment, usually exposed through $_SERVER['SERVER_PROTOCOL'] inside your application.
From phpinfo() under Apache 2.4:
SERVER_PROTOCOL => HTTP/1.1
回答2:
changing /etc/nginx/factcgi_params:
#fastcgi_param SERVER_PROTOCOL $server_protocol;
fastcgi_param SERVER_PROTOCOL HTTP/2.0;
Header should be:-
header($_SERVER['SERVER_PROTOCOL'].'404 Not Found');
来源：https://stackoverflow.com/questions/34718412/php-get-http-protocol-version-http-1-1-vs-http-2