Class DateTime

PHP Extension: Date
Documented at php.net

Methods summary
`public`	# `__construct( $time, $object )`
`public`	# `__wakeup( )`
`public static`	# `__set_state( )`
`public static`	# `createFromFormat( $format, $time, $object )`
`public static`	# `getLastErrors( )`
`public`	# `format( $format )`
`public`	# `modify( $modify )`
`public`	# `add( $interval )`
`public`	# `sub( $interval )`
`public`	# `getTimezone( )`
`public`	# `setTimezone( $timezone )`
`public`	# `getOffset( )`
`public`	# `setTime( $hour, $minute, $second )`
`public`	# `setDate( $year, $month, $day )`
`public`	# `setISODate( $year, $week, $day )`
`public`	# `setTimestamp( $unixtimestamp )`
`public`	# `getTimestamp( )`
`public`	# `diff( $object, $absolute )`