(PHP 4, PHP 5, PHP 7) Get Unix timestamp for midnight on Easter of a given year

(PHP 5 >= 5.3.0, PHP 7) Creates a new DateInterval object

(PHP 5 >= 5.3.0, PHP 7) Alias of

(PHP 5 >= 5.5.0, PHP 7) Returns the warnings and errors

(PHP 5 >= 5.2.0, PHP 7) Creates new DateTimeZone object

(PHP 5 >= 5.3.0, PHP 7) Returns location information for a timezone

(PHP 4, PHP 5, PHP 7) Validate a Gregorian date

(PHP 5 >= 5.3.0, PHP 7) Alias of

(PHP 4, PHP 5, PHP 7) Format a GMT/UTC time/date according to locale settings