Edit report at http://bugs.php.net/bug.php?id=53722&edit=1

 ID:                 53722
 User updated by:    romain dot riviere at gmail dot com
 Reported by:        romain dot riviere at gmail dot com
 Summary:            FILTER_VALIDATE_EMAIL fails on numeric TLDs
 Status:             Bogus
 Type:               Bug
 Package:            Filter related
 Operating System:   Linux
 PHP Version:        5.3.5
 Block user comment: N
 Private report:     N

 New Comment:

Precisely. FILTER_VALIDATE_EMAIL should validate *technically* correct
email 

addresses, not just ICANN-correct ones.

It is already the case for .foo or .bar TLDs, it just needs to do the
same for 

numeric TLDs, because from a technical point of view, there are no
different: old 

restrictions in old RFCs have all been superseded now.


Previous Comments:
------------------------------------------------------------------------
[2011-02-13 23:30:16] frank9321 at gmail dot com

I think that Romain in right. There are numeric TLDs (like the .42 TLD
wich is taking off), and sometimes, as Romain said, you use such TLDs in
your LAN.

So, really, the FILTER_VALIDATE_EMAIL should accept numeric TLDs. It
isn't because the ICANN said that there couldn't be numeric TLDs that
there aren't.

------------------------------------------------------------------------
[2011-01-18 14:15:16] romain dot riviere at gmail dot com

There ARE numeric TLDs, even though they are not made public. I have one
on my 

LAN.

The filter should probably not rely on what is believed to exist, but on
what is 

technically feasible.

In other words, if I can get email on the address johndoe@domain.123
(and again, 

YES, it works), then FILTER_VALIDATE_EMAIL should not reject such an
address.

------------------------------------------------------------------------
[2011-01-18 14:03:15] il...@php.net

Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

There are no numeric TLDs, the e-mail filters supports IP based e-mail
addresses 

however.

------------------------------------------------------------------------
[2011-01-12 13:48:58] romain dot riviere at gmail dot com

Description:
------------
Although FILTER_VALIDATE_EMAIL accepts non-existent TLDs, it refuses to
validate 

numeric TLDs.



AFAIK, there is no technical justification for this: numeric TLDs just
work out of 

the box as far as the DNS know about them.



I suggest that the filter should validate numeric TLDs, or that a 

FILTER_FLAG_ALLOW_NUMTLD be created to alter the default behaviour of
the filter.

Test script:
---------------
filter_var("johndoe@domain.123", FILTER_SANITIZE_EMAIL) ; // returns
false





------------------------------------------------------------------------



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