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

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Set the day on which the week is deemed to start

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Parse a number

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Encode string for MIME header

(PHP 7) Check if code point is permissible as the first character in a Java identifier

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Get the timezone-id used for the IntlDateFormatter

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Set the leniency of the parser

(PHP 7) Get the "age" of the code point public

(PHP 7) Check whether the code point is defined

(PHP >= 5.4.0, PECL intl >= 2.0.0) Locales to use when running checks