gmstrftime
(PHP 4, PHP 5)
gmstrftime — Format a GMT/UTC time/date according to locale settings
Description
$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".
Parameters
-
format -
See description in strftime().
-
timestamp -
The optional
timestampparameter is an integer Unix timestamp that defaults to the current local time if atimestampis not given. In other words, it defaults to the value of time().
Return Values
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().
Examples
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";
?>
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Коментарии
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().
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()));
?>
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';
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 :)