Sets the date and time based on a Unix timestamp

# DateTimeImmutable::setTimestamp

(PHP 5 >= 5.5.0, PHP 7, PHP 8)

DateTimeImmutable::setTimestamp — Sets the date and time based on a Unix timestamp

### 说明

#[\NoDiscard(message: "as DateTimeImmutable::setTimestamp() does not modify the object itself")]
public function DateTimeImmutable::setTimestamp(int `$timestamp`): DateTimeImmutable

Returns a new DateTimeImmutable object constructed from the old one, with the date and time set based on an Unix timestamp.

### 参数

`timestamp`

  Unix timestamp representing the date. Setting timestamps outside the range of int is possible by using DateTimeImmutable::modify() with the `@` format.

### 返回值

返回带有修改数据的新 DateTimeImmutable 对象。

### 示例

示例 #1 DateTimeImmutable::setTimestamp() example

面向对象风格

    <?php
    $date = new DateTimeImmutable();
    echo $date->format('U = Y-m-d H:i:s') . "\n";

    $newDate = $date->setTimestamp(1171502725);
    echo $newDate->format('U = Y-m-d H:i:s') . "\n";

以上示例的输出类似于：

    1272508903 = 2010-04-28 22:41:43
    1171502725 = 2007-02-14 20:25:25

### 参见

- DateTimeImmutable::getTimestamp() - 获取 Unix 时间戳
- DateTimeImmutable::setMicrosecond() - Sets microsecond part of the time

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