(PHP 7) Get the general category value for a code point

(PHP 7) Perform case folding on a code point

(PHP 7) Get the Unicode allocation block containing a code point

(No version information available, might only be in Git) Check if current position is valid

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Save the personal wordlist to a file

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Format the message

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Get the pattern used by the formatter

(PHP 7) Get character representation for a given digit and radix

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Checks if a language tag filter matches with locale

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Split multibyte string using regular expression