php – 如何正确使用token的Bearer令牌？

function getAuthorizationHeader(){
        $headers = null;
        if (isset($_SERVER[\Authorization\])) {
            $headers = trim($_SERVER["Authorization"]);
        }
        else if (isset($_SERVER[\HTTP_AUTHORIZATION\])) { //Nginx or fast CGI
            $headers = trim($_SERVER["HTTP_AUTHORIZATION"]);
        } elseif (function_exists(\apache_request_headers\)) {
            $requestHeaders = apache_request_headers();
            // Server-side fix for bug in old Android versions (a nice side-effect of this fix means we don\t care about capitalization for Authorization)
            $requestHeaders = array_combine(array_map(\ucwords\, array_keys($requestHeaders)), array_values($requestHeaders));
            //print_r($requestHeaders);
            if (isset($requestHeaders[\Authorization\])) {
                $headers = trim($requestHeaders[\Authorization\]);
            }
        }
        return $headers;
    }

function getBearerToken() {
    $headers = getAuthorizationHeader();
    // HEADER: Get the access token from the header
    if (!empty($headers)) {
        if (preg_match(\/Bearers(S+)/\, $headers, $matches)) {
            return $matches[1];
        }
    }
    return null;
}

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