(PHP 4 >= 4.0.6, PHP 5, PHP 7) Set/Get substitution character

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Find position (in grapheme units) of first occurrence of a

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Returns position and length of a matched part of the multibyte regular expression

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Get the pattern used by the formatter

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the time zone raw and GMT offset for the given moment in time

(PHP 7) Get character representation for a given digit and radix

(PHP >= 5.3.2, PECL intl >= 2.0.0) Get supported locales

(PHP 5 >= 5.2.0, PHP 7) Finds first occurrence of a string within another, case insensitive

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Whether this objectʼs time is after that of the passed object

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Get the locale used by formatter