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

(PHP 7) Check if code point is a base character

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get an ID in the equivalency group that includes the given ID

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

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

(No version information available, might only be in Git) Create iterator for navigating fragments between boundaries

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

(No version information available, might only be in Git) Create break iterator for logically possible line

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the source convertor type

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