(No version information available, might only be in Git) Get the rule set used to create this object

(PHP 5, PHP 7) Decodes a MIME header field

(PECL gender >= 0.8.0) Get textual country representation

(PHP 7) Make Unicode character lowercase public

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Set/Get current language

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Plural version of dcgettext

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.2, PHP 7, PECL idn >= 0.1) Convert domain name to IDNA ASCII

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Send encoded mail

(No version information available, might only be in Git) Create break iterator for boundaries of combining

(PHP 4 >= 4.0.5, PHP 5, PHP 7) Set current setting for character encoding conversion