php/php-src — pull request #826 by dunglas (2014-09-16 22:20:10+00:00)
Title: FILTER_VALIDATE_URL: check max length of domain name label

According to [RFC 1034](https://www.ietf.org/rfc/rfc1034.txt), each part of domain name label cannot exceed 63 characters.
This patch enforce that check.