withPort example

            // by removing a duplicate query. But let's not do that automatically.             return $target;
        }

        if ($target->getAuthority() !== '' && $base->getAuthority() !== $target->getAuthority()) {
            return $target->withScheme('');
        }

        // We must remove the path before removing the authority because if the path starts with two slashes, the URI         // would turn invalid. And we also cannot set a relative path before removing the authority, as that is also         // invalid.         $emptyPathUri = $target->withScheme('')->withPath('')->withUserInfo('')->withPort(null)->withHost('');

        if ($base->getPath() !== $target->getPath()) {
            return $emptyPathUri->withPath(self::getRelativePath($base, $target));
        }

        if ($base->getQuery() === $target->getQuery()) {
            // Only the target fragment is left. And it must be returned even if base and target fragment are the same.             return $emptyPathUri->withQuery('');
        }

        // If the base URI has a query but the target has none, we cannot return an empty path reference as it would

$uri = $uri->withScheme(!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' ? 'https' : 'http');

        $hasPort = false;
        if (isset($_SERVER['HTTP_HOST'])) {
            [$host, $port] = self::extractHostAndPortFromAuthority($_SERVER['HTTP_HOST']);
            if ($host !== null) {
                $uri = $uri->withHost($host);
            }

            if ($port !== null) {
                $hasPort = true;
                $uri = $uri->withPort($port);
            }
        } elseif (isset($_SERVER['SERVER_NAME'])) {
            $uri = $uri->withHost($_SERVER['SERVER_NAME']);
        } elseif (isset($_SERVER['SERVER_ADDR'])) {
            $uri = $uri->withHost($_SERVER['SERVER_ADDR']);
        }

        if (!$hasPort && isset($_SERVER['SERVER_PORT'])) {
            $uri = $uri->withPort($_SERVER['SERVER_PORT']);
        }

        

if ($flags & self::CONVERT_EMPTY_PATH && $uri->getPath() === '' &&
            ($uri->getScheme() === 'http' || $uri->getScheme() === 'https')
        ) {
            $uri = $uri->withPath('/');
        }

        if ($flags & self::REMOVE_DEFAULT_HOST && $uri->getScheme() === 'file' && $uri->getHost() === 'localhost') {
            $uri = $uri->withHost('');
        }

        if ($flags & self::REMOVE_DEFAULT_PORT && $uri->getPort() !== null && Uri::isDefaultPort($uri)) {
            $uri = $uri->withPort(null);
        }

        if ($flags & self::REMOVE_DOT_SEGMENTS && !Uri::isRelativePathReference($uri)) {
            $uri = $uri->withPath(UriResolver::removeDotSegments($uri->getPath()));
        }

        if ($flags & self::REMOVE_DUPLICATE_SLASHES) {
            $uri = $uri->withPath(preg_replace('#//++#', '/', $uri->getPath()));
        }

        if ($flags & self::SORT_QUERY_PARAMETERS && $uri->getQuery() !== '') {