International PHP Conference Berlin 2023

DateTimeInterface::getTimestamp

DateTimeImmutable::getTimestamp

DateTime::getTimestamp

date_timestamp_get

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

DateTimeInterface::getTimestamp -- DateTimeImmutable::getTimestamp -- DateTime::getTimestamp -- date_timestamp_getGets the Unix timestamp

说明

面向对象风格

public DateTimeInterface::getTimestamp(): int
public DateTimeImmutable::getTimestamp(): int
public DateTime::getTimestamp(): int

过程化风格

Gets the Unix timestamp.

参数

此函数没有参数。

返回值

Returns the Unix timestamp representing the date.

错误/异常

If the timestamp cannot be represented as int, a ValueError is thrown. Prior to PHP 8.0.0, false was returned in this case. Still, the timestamp can be retrieved as string by using DateTimeInterface::format() with the U format.

更新日志

版本 说明
8.0.0 These functions no longer return false on failure.

范例

示例 #1 DateTime::getTimestamp() example

面向对象风格

<?php
$date 
= new DateTimeImmutable();
echo 
$date->getTimestamp();
?>

过程化风格

<?php
$date 
date_create();
echo 
date_timestamp_get($date);
?>

以上例程的输出类似于:

1272509157

参见

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User Contributed Notes 1 note

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Uriel Gonzalez
4 days ago
Sometimes timestamp is required in miliseconds or microseconds, and as there's no flag for that for method getTimestamp, then you could use Format instead.

Example:
(int)$now->format('Uv'); // Timestamp in miliseconds
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