(PHP 7) Check if code point has the Bidi_Mirrored property

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Set/Get the default options for mbregex functions

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the raw GMT offset (before taking daylight savings time into account

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

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Set/Get character encoding detection order

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Set an attribute

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Set/Get character encoding for multibyte regex

(PHP 7) Check whether the code point is defined

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Parse string to a timestamp value

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