WordPress behind proxy code example

Example: Wordpress behind reverse proxy

/* SSL Settings */
define('FORCE_SSL_ADMIN', true);

/* Turn HTTPS 'on' if HTTP_X_FORWARDED_PROTO matches 'https' */
if (strpos($_SERVER['HTTP_X_FORWARDED_PROTO'], 'https') !== false) {
    $_SERVER['HTTPS'] = 'on';
}