(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Create a timezone object from

(PHP 7) Check whether the code point is defined

(PHP 7) Get the decimal digit value of a code point for a given radix

(PHP 4 >= 4.0.5, PHP 5, PHP 7) Convert string to requested character encoding

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get behavior for handling repeating wall time

(PHP 5 >= 5.3.0, PHP 7, PECL enchant >= 1.0.1) Returns a list of available dictionaries

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Regular expression match with multibyte support

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Set/Get HTTP output character encoding

(PHP 7) Check if code point has the general category "Lu" (uppercase letter)

(PHP >= 5.4.0, PECL intl >= 2.0.0) Get transliterator IDs