(PHP 7) Check if code point is punctuation character

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Whether the objectʼs time is in Daylight Savings Time

(No version information available, might only be in Git) Advance the iterator to the first boundary following

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Whether another calendar is equal but for a different time

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the number of IDs in the equivalency group that includes the given

(PHP 7) Get bidirectional category value for a code point

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Tries to find out best available locale based on HTTP "Accept-Language"

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Add a (signed) amount of time to a field

(PHP >= 5.4.0, PECL intl >= 2.0.0) Constructor

(PHP 7) Check if code point is an alphanumeric character