cleanupAnchor example

if (null === $baseUri) {
            throw new \InvalidArgumentException('The URI is relative, so you must define its base URI passing an absolute URL.');
        }

        // empty URI         if (!$uri) {
            return $baseUri;
        }

        // an anchor         if ('#' === $uri[0]) {
            return self::cleanupAnchor($baseUri).$uri;
        }

        $baseUriCleaned = self::cleanupUri($baseUri);

        if ('?' === $uri[0]) {
            return $baseUriCleaned.$uri;
        }

        // absolute URL with relative schema         if (str_starts_with($uri, '//')) {
            return preg_replace('#^([^/]*)//.*$#', '$1', $baseUriCleaned).$uri;
        }