百科狗IntlCalendar::fieldDifference() - IntlCalendar类
IntlCalendar::fieldDifference()
(PHP 5 >= 5.5.0, PHP 7, PECL >= 3.0.0a1)
Calculate difference between given time and this objectʼs time
说明
面向对象风格publicIntlCalendar::fieldDifference(float $when,int $field): int过程化风格
intlcal_field_difference(IntlCalendar$cal,float $when,int $field): int
Return the difference between the given time and the time this object is set to, with respect to the quantity specified the$fieldparameter.
This method is meant to be called successively, first with the most significant field of interest down to the least significant field. To this end, as a side effect, this calendarʼs value for the field specified is advanced by the amount returned.
参数
$calThe IntlCalendar resource.
$whenThe time against which to compare the quantity represented by the$field. For the result to be positive, the time given for this parameter must be ahead of the time of the object the method is being invoked on.
$field
The field that represents the quantity being compared.
One of the IntlCalendar date/time field constants. These are integer values between0and IntlCalendar::FIELD_COUNT.
返回值
Returns a(signed)difference of time in the unit associated with the specified field 或者在失败时返回FALSE.
范例
IntlCalendar::fieldDifference()
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