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

(PECL hrtime >= 0.4.3) Stop time measurement

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

(PHP 5 >= 5.2.0, PHP 7) Returns date formatted according to given format

(PHP 4, PHP 5, PHP 7) Return current Unix timestamp with microseconds

(PHP 4, PHP 5, PHP 7) Get date/time information

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

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

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Returns information about a particular calendar

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