Description:
------------
It seems that the scheme is always required for FILTER_VALIDATE_URL, whether or not FILTER_FLAG_SCHEME_REQUIRED is used - making the second flag redundant.

Is this the expected behavior of FILTER_VALIDATE_URL?  Does it never evaluate 'example.com' to true?

---
From manual page: function.filter-var
---



Reproduce code:
---------------
---
From manual page: function.filter-var
---

#1:
<?php
var_dump(filter_var('example.com', FILTER_VALIDATE_URL));
?>

#2:
<?php
var_dump(filter_var('example.com', FILTER_VALIDATE_URL, FILTER_FLAG_SCHEME_REQUIRED));
?>

Expected result:
----------------
I'd expect to see:

#1: string(11) "example.com"

#2: bool(false)

Actual result:
--------------
#1: bool(false)

#2: bool(false)