(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Tell whether a day is a weekday, weekend or a day that has a transition
(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the smallest local maximum for a field
(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Set the calendar time in milliseconds since the epoch
(PHP 5.5.0, PHP 7, PECL >= 3.0.0a2) Create an IntlCalendar from a DateTime object or string
(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Whether date/time interpretation is in lenient mode
(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Whether a certain date/time is in the weekend
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