(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Set a symbol value

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Setup string and regular expression for a multibyte regular expression match

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Gets the default locale value from the INTL global 'default_locale'

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Convert string from one charset to another

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Function to extract a sequence of default grapheme clusters

(PHP 5, PHP 7) Returns an array of all supported encodings

(PHP 7) Get the max value for a Unicode property

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Gets the keywords for the input locale

(PHP 5 >= 5.3.0, PECL intl >= 1.0.0) Sets the time zone to use

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Sets the calendar type used by the formatter