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Date/Time 함수 목록
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# gmdate

(PHP 4, PHP 5)

gmdate — Format a GMT/UTC date/time

### 설명

string gmdate ( string `$format` [, int `$timestamp` ] )

Identical to the date() function except that the time returned is Greenwich Mean Time (GMT).

### 인수

`format`

  The format of the outputted date string. See the formatting options for the date() function.

`timestamp`

  선택적인 `timestamp` 인수는 `timestamp` 가 주어지지 않았을 경우, 현재 로컬 시간을 기본값으로 가지는 integer 유닉스 타임스탬프입니다. 즉, 기본값은 time() 값입니다.

### 반환값

Returns a formatted date string. If a non-numeric value is used for `timestamp` , `FALSE` is returned and an `E_WARNING` level error is emitted.

### 변경점

버전 | 설명
--- | ---
5.1.0 | The valid range of a timestamp is typically from Fri, 13 Dec 1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT. (These are the dates that correspond to the minimum and maximum values for a 32-bit signed integer). However, before PHP 5.1.0 this range was limited from 01-01-1970 to 19-01-2038 on some systems (e.g. Windows).
5.1.1 | There are useful constants of standard date/time formats that can be used to specify the `format` parameter.

### 예제

Example #1 gmdate() example

When run in Finland (GMT +0200), the first line below prints "Jan 01 1998 00:00:00", while the second prints "Dec 31 1997 22:00:00".

`<?php
echo date("M d Y H:i:s", mktime(0, 0, 0, 1, 1, 1998));
echo gmdate("M d Y H:i:s", mktime(0, 0, 0, 1, 1, 1998));
?>`

### 참고

- date() - 로컬 날짜/시간을 형식화합니다
- mktime() - Get Unix timestamp for a date
- gmmktime() - Get Unix timestamp for a GMT date
- strftime() - Format a local time/date according to locale settings

gettimeofday
gmmktime
Date/Time 함수 목록
PHP Manual