DatePeriod::getStartDate()
(PHP 5 >= 5.6.5, PHP 7)
Gets the start date
说明
面向对象风格public DatePeriod::getStartDate(void): DateTimeInterface
Gets the start date of the period.
参数
此函数没有参数。
返回值
Returns aDateTimeImmutableobjectwhen theDatePeriodis initialized with aDateTimeImmutableobjectas the$startparameter.
Returns aDateTimeobjectotherwise.
范例
Example #1DatePeriod::getStartDate()example
<?php $period = new DatePeriod('R7/2016-05-16T00:00:00Z/P1D'); $start = $period->getStartDate(); echo $start->format(DateTime::ISO8601); ?>
以上例程会输出:
2016-05-16T00:00:00+0000
参见
- DatePeriod::getEndDate() Gets the end date
- DatePeriod::getDateInterval() Gets the interval