(PHP 7) Get the decimal digit value of a decimal digit character

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

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Perform case folding on a string

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Create a new IntlCalendar

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Calculate difference between given time and this objectʼs time

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Get formatter's last error code.

(PHP 7) Get the Unicode version public static

(PHP 7) Enumerate all code points with their Unicode general categories

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

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