Uri::createUriString( string $scheme, string $authority, string $path, string $query, string $fragment )

218    private static function createUriString(string $scheme, string $authority, string $path, string $query, string $fragment): string219    {220        $uri = '';221        if ('' !== $scheme) {222            $uri .= $scheme . ':';223        }224        if ('' !== $authority) {225            $uri .= '//' . $authority;226        }227        if ('' !== $path) {228            if ('/' !== $path[0]) {229                if ('' !== $authority) {230                    // If the path is rootless and an authority is present, the path MUST be prefixed by "/"231                    $path = '/' . $path;232                }233            } elseif (isset($path[1]) && '/' === $path[1]) {234                if ('' === $authority) {235                    // If the path is starting with more than one "/" and no authority is present, the236                    // starting slashes MUST be reduced to one.237                    $path = '/' . \ltrim($path, '/');238                }239            }240            $uri .= $path;241        }242        if ('' !== $query) {243            $uri .= '?' . $query;244        }245        if ('' !== $fragment) {246            $uri .= '#' . $fragment;247        }248        return $uri;249    }