(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Checks if the provided string is already in the specified

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

(PHP 7) Check if code point has the general category "Lu" (uppercase letter)

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Get formatter locale

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

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

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the destination converter type

(No version information available, might only be in Git) Get the binary form of compiled rules

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Set/Get HTTP output character encoding

(PHP 5 >= 5.3.0, PHP 7, PECL enchant >= 0.1.0 ) Whether a dictionary exists or not. Using non-empty tag