Bug #69581 [Nab]: filter_var() FILTER_VALIDATE_EMAIL, E-Mail length

Edit report at https://bugs.php.net/bug.php?id=69581&edit=1 ID: 69581 Updated by: yohgaki@php.net Reported by: sebastian at dmwd dot de Summary: filter_var() FILTER_VALIDATE_EMAIL, E-Mail length Status: Not a bug Type: Bug Package: Filter related Operating System: Linux PHP Version: 5.6.8 Block user comment: N Private report: N New Comment: I agree to have RFC compliance in general. However, most mail system allows "username part == max file name length". It's 255 bytes or so usually. 64 octets limit seems a bit too severe to me. Perhaps, double the limit for user names? There may be system generated long user names for some purposes. 64 bytes would be long enough for almost all user names, though. Previous Comments: ------------------------------------------------------------------------ [2015-05-08 06:12:51] rasmus@php.net RFC 5322 section 4.5.3.1.1 states: The maximum total length of a user name or other local-part is 64 octets. This address is therefore invalid according to the strict interpretation of the RFC ------------------------------------------------------------------------ [2015-05-06 11:50:34] cmb@php.net Apparently, the behavior has changed as of PHP 5.2.14/5.3.3: <http://3v4l.org/7iHni> ------------------------------------------------------------------------ [2015-05-06 06:04:20] sebastian at dmwd dot de Description: ------------ Validation of long e-mail addresses with filter_var and FILTER_VALIDATE_EMAIL fails. Test script: --------------- var_dump(filter_var('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa@foo.com', FILTER_VALIDATE_EMAIL)); Expected result: ---------------- string(78) "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa@foo.com" Actual result: -------------- bool(false) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=69581&edit=1