Bug #60381 [Opn->Csd]: FILTER_VALIDATE_EMAIL invalid punycode regexp

Edit report at https://bugs.php.net/bug.php?id=60381&edit=1 ID: 60381 User updated by: enderstd at gmail dot com Reported by: enderstd at gmail dot com Summary: FILTER_VALIDATE_EMAIL invalid punycode regexp -Status: Open +Status: Closed Type: Bug Package: Filter related PHP Version: 5.3.8 Block user comment: N Private report: N New Comment: This bug is duplicate for: https://bugs.php.net/bug.php?id=55478 Previous Comments: ------------------------------------------------------------------------ [2011-11-25 08:40:15] enderstd at gmail dot com Description: ------------ IDN domains can contain hyphens in its name. When we convert these domain names to punycode we end up with several hyphens in a row. For example: xn----7sbbtkohtqhvkc8j.xn--p1ai (культура-пенза.рф) Yet it is a valid domain name. The regexp in the ext/filter/logical_filters.c:525 doens't allow multiple hyphens but two: > ... (?:(?:(?:xn--)?[a-z0-9]+( .... So if I try filter_var("asd@xn----7sbbtkohtqhvkc8j.xn--p1ai", FILTER_VALIDATE_EMAIL) it returns false. I think valid regexp will be like (?:xn-(-)+)?[a-z0-9]+ yet I can't be sure since this regexp is really scary. Test script: --------------- <?php var_dump(filter_var("asd@xn----7sbbtkohtqhvkc8j.xn--p1ai", FILTER_VALIDATE_EMAIL)); Expected result: ---------------- string(35) "asd@xn----7sbbtkohtqhvkc8j.xn--p1ai" Actual result: -------------- bool(false) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=60381&edit=1