Nothing yet, other than source code documentation. A tutorial on
how to handle UTF-8 with this library is pending. You will find help at;
http://www.phpwact.org/php/i18n/charsets
http://www.phpwact.org/php/i18n/utf-8
Important Note: DO NOT use these functions without understanding WHY
you are using them. In particular, do not blindly replace all use of PHP's
string functions which functions found here - most of the time you will
not need to, and you will be introducing a significant performance
overhead to your application. You can get a good idea of when to use what
from reading: http://www.phpwact.org/php/i18n/utf-8
Important Note: For sake of performance most of the functions here are
not "defensive" (e.g. there is not extensive parameter checking, well
formed UTF-8 is assumed). This is particularily relevant when is comes to
catching badly formed UTF-8 - you should screen input on the "outer
perimeter" with help from functions in the utf8_validation.php and
utf8_bad.php files.
Important Note: this library treats ALL ASCII characters as valid, including ASCII control characters. But if you use some ASCII control characters in XML, it will render the XML ill-formed. Don't be a bozo: http://hsivonen.iki.fi/producing-xml/#controlchar