(PHP 5 >= 5.3.0, PHP 7) Sets up a DateInterval from the relative parts of the string

(PHP 5 >= 5.2.0, PHP 7) Returns associative array containing dst, offset and the timezone name

(PHP 4, PHP 5, PHP 7) Get the local time array

(PHP 5 >= 5.2.0, PHP 7) Alias of

(PHP 5 >= 5.5.0, PHP 7) Returns new DateTimeImmutable object formatted according to the specified format

(PHP 5 >= 5.5.0, PHP 7) Alias of

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Return the number of days in a month for a given year and calendar

(PECL hrtime >= 0.4.3) Timer frequency in ticks per second

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

(PHP 5 >= 5.5.0, PHP 7) Sets the ISO date