gmstrftime

(PHP 4, PHP 5)

gmstrftime — Format a GMT/UTC time/date according to locale settings

說明

string gmstrftime ( string $format [, int $timestamp = time() ] )

Behaves the same as strftime() except that the time returned is Greenwich Mean Time (GMT). For example, when run in Eastern Standard Time (GMT -0500), the first line below prints "Dec 31 1998 20:00:00", while the second prints "Jan 01 1999 01:00:00".

參數

format: See description in strftime().
timestamp: 選擇性 timestamp 參數是一個 integer 類型的 Unix 時間戳記，如果沒給予 timestamp 則其預設值是目前本地時間。換句話說，預設為 time() 函式的值。

回傳值

Returns a string formatted according to the given format string using the given timestamp or the current local time if no timestamp is given. Month and weekday names and other language dependent strings respect the current locale set with setlocale().

範例

Example #1 gmstrftime() example


<?php
setlocale(LC_TIME, 'en_US');
echo strftime("%b %d %Y %H:%M:%S", mktime(20, 0, 0, 12, 31, 98)) . "\n";
echo gmstrftime("%b %d %Y %H:%M:%S", mktime(20, 0, 0, 12, 31, 98)) . "\n";
?>

參見

strftime() - Format a local time/date according to locale settings

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User Contributed Notes 4 notes

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yellow dot snow at huskies dot com ¶

19 years ago


HTTP 1.1 (RFC 2068) requires an RFC 1123 date with a four digit year, so the correct format to use for a Last-modified header would look something like this:

<?php
header("Last-modified: " . 
gmstrftime("%a, %d %b %Y %T %Z",getlastmod()));
?>

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pvdster at hotmail dot com ¶

19 years ago


If you want the dutch time on your pages and you are hosted on a server in the USA you can easily change it this way:



<?php

setlocale(LC_TIME, 'nl_NL');

$tgl = gmstrftime("%d %B %Y - %H:%M uur",time()+3600);

?>



Then use $tgl to display the right time.

Note the +3600 is a day light savings time correction.

The result: 22 maart 2005 - 16:39 uur



First I used the normal date function and this was the previous result: March 22, 2005 - 04:28 AM



I needed it for a dutch guestbook.



I'm new to PHP and it took me a while to find it out and maybe it's of no use for experienced PHP programmers but I thought people can always ignore my post :)

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-2

neo at gothic-chat d0t de ¶

19 years ago


To get a RFC 850 date (used in HTTP) of the current time:

gmstrftime ("%A %d-%b-%y %T %Z", time ());

This will get for example:
Friday 25-Jun-04 03:30:23 GMT

Please note that times in HTTP-headers _must_ be GMT, so use gmstrftime() instead of strftime().

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-3

peter dot albertsson at spray dot se ¶

19 years ago


gmstrftime() should not be used to generate a RFC 850 date for use in HTTP headers, since its output is affected by setlocale().

Use gmdate instead:

gmdate('D, d M Y H:i:s') . ' GMT';

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