(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

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

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

(PHP 5 >= 5.6.0, PHP 7) Returns new DateTimeImmutable object encapsulating the given DateTime object

(PHP 5 >= 5.1.0, PHP 7) Gets the default timezone used by all date/time functions in a script

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

(PHP 5 >= 5.3.0, PHP 7) Returns the warnings and errors

(PHP 5 >= 5.1.0, PHP 7) Sets the default timezone used by all date/time functions in a script