(PHP 4, PHP 5, PHP 7) Get Unix timestamp for a GMT date

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

(PHP 5 >= 5.3.0, PHP 7) Sets the date and time based on an Unix timestamp

(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 >= 5.5.0, PHP 7) Returns new DateTimeImmutable object

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

(PHP 4, PHP 5, PHP 7) Convert Unix timestamp to Julian Day

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

(PHP 5 >= 5.1.2, PHP 7) Returns an array with information about sunset/sunrise and twilight begin/end