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

(PHP 5 >= 5.2.0, PHP 7) Sets the ISO date

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

(PHP 5, PHP 7) Format a local time/date as integer

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

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

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

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

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

(PHP 5 >= 5.3.0, PHP 7) Formats the interval