Bug #78958 [Nab]: FILTER_VALIDATE_EMAIL fails on a valid email address
Edit report at https://bugs.php.net/bug.php?id=78958&edit=1
ID: 78958
User updated by: kaulkwappe dot php-bugs at prvy dot eu
Reported by: kaulkwappe dot php-bugs at prvy dot eu
Summary: FILTER_VALIDATE_EMAIL fails on a valid email address
Status: Not a bug
Type: Bug
Package: Filter related
Operating System: Debian Buster 10.2
PHP Version: 7.3.11
Block user comment: N
Private report: N
New Comment:
I think a strict mode would make sense since developers may want to
a) prevent users from entering a new, not RFC valid email address, but
b) also prevent pseudo false positives from foreign email addresses.
E.g. when an user answers an email the system would check if the recipient email address you entered
is valid; however, the replying user cannot influence its RFC validness because it is an foreign
email address. Not RFC conform, but still valid. But the same user may not choose a RFC invalid
email address if he wants to create an email alias for himself.
Previous Comments:
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[2019-12-13 17:52:58] cmb@php.net
While the documentation of FILTER_VALIDATE_EMAIL claims it would
validate against the syntax in RFC 822, that has obviously been
changed with the fix for bug #49576.
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[2019-12-13 15:48:26] kaulkwappe dot php-bugs at prvy dot eu
Seems then to be a bug of the PHP mailing lists (https://www.php.net/mailing-lists.php) since they
return such invalid email addresses.
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[2019-12-13 15:42:22] requinix@php.net
According to RFC 5321, the local part of an email address (before the @) is limited to 64
characters.
https://tools.ietf.org/html/rfc5321#section-4.5.3.1.1
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[2019-12-13 15:15:48] cmb@php.net
Confirmed: <https://3v4l.org/eikec>.
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[2019-12-13 11:55:15] kaulkwappe dot php-bugs at prvy dot eu
Description:
------------
---
From manual page: https://php.net/filter.filters.validate
---
Test script:
---------------
$email =
'php-announce-sc.123456.abcabcabcabcabcabc-abcabcabc-php=example.com@lists.php.net';
var_dump(filter_var($email, FILTER_VALIDATE_EMAIL));
Expected result:
----------------
Should return validate and return the string.
Actual result:
--------------
Does not validate. Returns
> bool(false)
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Edit this bug report at https://bugs.php.net/bug.php?id=78958&edit=1
Thread (6 messages)