How to get site URL protocol?

Code Snippets/PHP

by w3labkr 2021. 12. 9. 07:51

Notes:

you should look also for HTTP_X_FORWARDED_PROTO (e.g. if proxy server)
relying on 443 port is not safe (https could be served on different port)
REQUEST_SCHEME not reliable

if (isset($_SERVER['HTTPS']) &&
    ($_SERVER['HTTPS'] == 'on' || $_SERVER['HTTPS'] == 1) ||
    isset($_SERVER['HTTP_X_FORWARDED_PROTO']) &&
    $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') {
    $protocol = 'https';
} else {
    $protocol = 'http';
}

Here is how I do it ... it is a shorthand if else version of Rid Iculous's answer ...

$protocol = isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] === 'on' || $_SERVER['HTTPS'] === 1) || isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https' ? 'https' : 'http';

PHP Get Site URL Protocol - http vs https

I've written a little function to establish the current site url protocol but I don't have SSL and don't know how to test if it works under https. Can you tell me if this is correct? function site...

stackoverflow.com