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Bug #49652 FILTER_VALIDATE_EMAIL alllows double -
Submitted: 2009-09-24 10:27 UTC Modified: 2009-09-24 19:50 UTC
From: riad93 at mail dot ru Assigned:
Status: Not a bug Package: Filter related
PHP Version: 5.2.11 OS: *
Private report: No CVE-ID: None
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From: riad93 at mail dot ru
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 [2009-09-24 10:27 UTC] riad93 at mail dot ru 
Description:
------------
As I know double - are not allowed in domen names and usernames of email

Reproduce code:
---------------
var_dump(filter_var('a--b@m--l.ru',FILTER_VALIDATE_EMAIL));

Expected result:
----------------
bool(false)

Actual result:
--------------
string(12) "a--b@m--l.ru"

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 [2009-09-24 19:50 UTC] sjoerd@php.net 
Thank you for your feedback.

I could not find any specification that disallows consecutive hyphens, and I did find an actual domain name with consecutive hyphens:
http://www.xn--sgarr-wqa3i.com/

I guess it is allowed, so this is not a bug.
 
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