PHP Net_IDNA is a class to convert between the
Punycode and Unicode formats. Punycode is a
standard described in RFC 3492 and part of IDNA
(Internationalizing Domain Names in Applications
[RFC3490]) . This class allows PHP scripts to
convert these domain names without having one of
the PHP extensions installed. It supports both IDNA 2003 and IDNA 2008.
