ob_iconv_handler
Introduction
Human Language and Character Encoding Support
PHP Manual
International Domain Names
Introduction
Installing/Configuring
Requirements
Installation
Runtime Configuration
Resource Types
Predefined Constants
Idn Functions
idn_strerror
— Returns string describing the IDNA error code
idn_to_ascii
— Convert UTF-8 encoded domain name to ASCII
idn_to_utf8
— Convert ASCII encoded domain name to UTF-8
ob_iconv_handler
Introduction
Human Language and Character Encoding Support
PHP Manual