(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the global maximum value for a field

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

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the first day of the week for the calendarʼs locale

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a2) Convert an IntlCalendar into a DateTime object

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Add value to field without carrying into more significant fields

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Whether this objectʼs time is after that of the passed object

(No version information available, might only be in Git) Set minimal number of days the first week in a year

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get last error message on the object

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Clear a field or all fields

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get minimal number of days the first week in a year or month can have