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

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

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

(PHP 5 >= 5.5.0, PHP 7) Adds an amount of days, months, years, hours, minutes and seconds

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

(PHP 5 >= 5.2.0, PHP 7) The __wakeup handler

(PHP 5 >= 5.2.0, PHP 7) Alters the timestamp

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

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

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