(No version information available, might only be in Git) Tell whether an offset is a boundaryʼs offset

(PHP 7) Get the property value for a given value name

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

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Get the locale name of the collator

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Plural version of dgettext

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

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

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

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Decode string in MIME header field

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get behavior for handling skipped wall time