Bug #53395 [Bgs]: FILTER_VALIDATE_EMAIL return false on valid emails

Edit report at http://bugs.php.net/bug.php?id=53395&edit=1 ID: 53395 Updated by: rasmus@php.net Reported by: edanpr at gmail dot com Summary: FILTER_VALIDATE_EMAIL return false on valid emails Status: Bogus Type: Bug Package: Filter related Operating System: debian PHP Version: 5.3.3 Block user comment: N Private report: N New Comment: This comes back to whether we filter according to spec or we filter according to real-world cases that go against the spec. The problem with the latter is that it is not a finite problem. If we go by the spec we can simply follow the spec and we are done. But yes, you are right, there are domains out there that are not legal according to the RFCs but have still been issued for whatever reason. 2 hyphens is definitely not valid in non-IDN domain names. Previous Comments: ------------------------------------------------------------------------ [2010-11-25 04:39:27] edanpr at gmail dot com Ok, 2 dots is wrong, but double dash is still a valid domain which means users can have email there. a--b.com - real domain h--t.com - real domain ------------------------------------------------------------------------ [2010-11-25 04:06:44] aharvey@php.net filter_var() is right in both cases here: domain names can only include consecutive hyphens when being used for internationalised domains (which implies that the name is of the form xn--XXX), and the local part of an e-mail address can't include consecutive dots, per the grammar in RFC 5322. ------------------------------------------------------------------------ [2010-11-24 12:58:10] edanpr at gmail dot com Description: ------------ In php 5.3.3 using filter_var to validate email (FILTER_VALIDATE_EMAIL) that got more than one period (.) or dash (-) results in error while in 5.3.2 it didn't. test@h--t.com will return false on 5.3.3 and true on 5.3.2 t..est@test.com will return false on 5.3.3 and true on 5.3.2 Test script: --------------- <? $adr1 = 't..est@test.com'; $adr2 = 'test@h--t.com'; var_dump(filter_var($adr1, FILTER_VALIDATE_EMAIL)); var_dump(filter_var($adr2, FILTER_VALIDATE_EMAIL)); Expected result: ---------------- string(15) "t..est@test.com" string(13) "test@h--t.com" Actual result: -------------- bool(false) bool(false) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=53395&edit=1