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# PHP Function gmstrftime()

## Syntax

string gmstrftime ( string $format [, int $timestamp] );

## Definition and Usage

Behaves the same as strftime() except that the time returned is Greenwich Mean Time (GMT).

## Paramters

Parameter | Description
--- | ---
format | required.Specifies how to return the result:

- %a - abbreviated weekday name
- %A - full weekday name
- %b - abbreviated month name
- %B - full month name
- %c - preferred date and time representation
- %C - century number (the year divided by 100, range 00 to 99)
- %d - day of the month (01 to 31)
- %D - same as %m/%d/%y
- %e - day of the month (1 to 31)
- %g - like %G, but without the century
- %G - 4-digit year corresponding to the ISO week number (see %V).
- %h - same as %b
- %H - hour, using a 24-hour clock (00 to 23)
- %I - hour, using a 12-hour clock (01 to 12)
- %j - day of the year (001 to 366)
- %m - month (01 to 12)
- %M - minute
- %n - newline character
- %p - either am or pm according to the given time value
- %r - time in a.m. and p.m. notation
- %R - time in 24 hour notation
- %S - second
- %t - tab character
- %T - current time, equal to %H:%M:%S
- %u - weekday as a number (1 to 7), Monday=1. Warning: In Sun Solaris Sunday=1
- %U - week number of the current year, starting with the first Sunday as the first day of the first week
- %V - The ISO 8601 week number of the current year (01 to 53), where week 1 is the first week that has at least 4 days in the current year, and with Monday as the first day of the week
- %W - week number of the current year, starting with the first Monday as the first day of the first week
- %w - day of the week as a decimal, Sunday=0
- %x - preferred date representation without the time
- %X - preferred time representation without the date
- %y - year without a century (range 00 to 99)
- %Y - year including the century
- %Z or %z - time zone or name or abbreviation
- %% - a literal % character

timestamp | Optional. This is an integer Unix timestamp that defaults to the current local time if a timestamp is not given. In other words, it defaults to the value of time().

## Return Value

Returns a string formatted according to the given format string using the given timestamp or the current local time if no timestamp is given.

## Example

Following is the usage of this function:

    <?php
    setlocale(LC_TIME, 'en_US');
    echo strftime("%b %d %Y %H:%M:%S",
                   mktime(20, 0, 0, 12, 31, 2005)) . "\n";
    echo gmstrftime("%b %d %Y %H:%M:%S",
                   mktime(20, 0, 0, 12, 31, 2005)) . "\n";
    ?>

This will produce following result:

    Dec 31 2005 20:00:00
    Jan 01 2006 03:00:00

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