(PHP 4 >= 4.0.6, PHP 5, PHP 7) Convert "kana" one from another ("zen-kaku", "han-kaku" and more)

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Create a collator

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Make a string lowercase

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Returns an appropriately localized display name for the input

(PHP 7) Check if code point is an ISO control code

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get substitution chars

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get array of locales for which there is data

(PHP 7) Check if code point has the Alphabetic Unicode property

(No version information available, might only be in Git) Create break iterator for word breaks

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Default "from" callback function