DateTime
PHP Manual

DateTime::diff

(PHP 5 >= 5.3.0)

DateTime::diffReturns the difference between two DateTime objects

설명

public DateInterval DateTime::diff ( DateTime $datetime [, bool $absolute ] )

Returns the difference between two DateTime objects.

인수

datetime

The date to compare to.

absolute

Whether to return absolute difference. Defaults to FALSE.

반환값

The difference between two dates.


DateTime
PHP Manual