(PHP 4 >= 4.0.2, PHP 5, PHP 7) Create a config used to open a dictionary

(PHP >= 5.4.0, PECL intl >= 2.0.0) Create an inverse transliterator

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Get description of the last error

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Create UConverter object

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

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Ignore words less than N characters long

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

(PHP 5 >= 5.3.0, PHP 7, PECL enchant >= 0.1.0 ) Returns the last error of the current spelling-session

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Check a word

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Add the word to a personal wordlist