DatePeriod::getStartDate

(PHP 5 >= 5.6.5, PHP 7, PHP 8)

DatePeriod::getStartDate — Gets the start date

面向对象风格

public DatePeriod::getStartDate(): DateTimeInterface

Gets the start date of the period.

此函数没有参数。

Returns a DateTimeImmutable object when the DatePeriod is initialized with a DateTimeImmutable object as the start parameter.

Returns a DateTime object otherwise.

示例 #1 DatePeriod::getStartDate() example

<?php
$period = new DatePeriod('R7/2016-05-16T00:00:00Z/P1D');
$start = $period->getStartDate();
echo $start->format(DateTime::ISO8601);
?>

以上示例会输出：

2016-05-16T00:00:00+0000