DateTimeImmutable::modify

(PHP 5 >= 5.5.0, PHP 7)

DateTimeImmutable::modify — Creates a new object with modified timestamp

说明

public DateTimeImmutable::modify ( string $modify ) : DateTimeImmutable

Creates a new DateTimeImmutable object with modified timestamp. The original object is not modified.

参数

object: 仅过程化风格：由 date_create() 返回的 DateTime 类型的对象。此函数会修改这个对象。
modify: 日期/时间字符串。正确格式的说明详见日期与时间格式。

返回值

Returns the newly created object 或者在失败时返回 FALSE.

User Contributed Notes

dmytro dot sokil at gmail dot com 19-Feb-2018 05:36


To modify milliseconds and microseconds use next formats:



<?php

$a = new \DateTimeImmutable('2018-01-01 00:00:00.000'); 

$b = $a->modify('9 msec'); 

var_dump($b->format('Y-m-d H:i:s.u'));

?>



Returns string(26) "2018-01-01 00:00:00.009000"



<?php

$a = new \DateTimeImmutable('2018-01-01 00:00:00.000'); 

$b = $a->modify('9 usec'); 

var_dump($b->format('Y-m-d H:i:s.u'));

?>



Returns "2018-01-01 00:00:00.000009"