(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) 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) Whether a certain date/time is in the weekend

(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) Get the objectʼs timezone

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Set whether date/time interpretation is to be lenient