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

(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 >= 5.3.0, PHP 7) Alias of

(PHP 4, PHP 5, PHP 7) Converts a Julian Day Count to a Julian Calendar Date

(PHP 5 >= 5.3.0, PHP 7) Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime

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

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

(PECL hrtime >= 0.4.3) Get elapsed ticks for the last interval.