$u_r_l->offsetGet()
Get normalized URL property.
$u_r_l->offsetGet($key);
Example:
$url = new URL('https://mecha-cms.com/foo/bar/1');
$A = [$url->path, $url->i];
$B = [$url['path'], $url['i']];
Result:
$A = ['/foo/bar', '/1'];
$B = ['foo/bar', 1];