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

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

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

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

(PHP 4, PHP 5, PHP 7) Format a GMT/UTC date/time

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

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

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

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