(PHP 5 >= 5.2.0, PHP 7) Returns the name of the timezone

(PHP 5 >= 5.2.0, PHP 7) Returns all transitions for the timezone

(PHP 5 >= 5.2.0, PHP 7) Returns a numerically indexed array containing all defined timezone identifiers

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

(PHP 5 >= 5.2.0, PHP 7) Returns the timezone offset from GMT

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

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