The "gmstrftime()" function is used to format a GMT/UTC time/date according to local settings.

    gmstrftime(format,timestamp)

In the above syntax the parameters for the function are "format", which specifies the format of the output, "timestamp", is a default field which specifies date or time to be formatted, if not specified it will take default GMT Time.

    <?php
    echo(strftime("%b %d %Y %X", mktime(20,0,0,12,31,98)));
    echo(gmstrftime("%b %d %Y %X", mktime(20,0,0,12,31,98)));
    //Print the current date, time, and timezone.
    echo(gmstrftime("It is %a on %b %d, %Y, %X time zone: %Z",time()));
    ?>

    Dec 31 1998 20:00:00
    Dec 31 1998 19:00:00
    It is Wed on Jan 25, 2006, 11:32:10 time zone: W. Europe Standard Time

In the above example the gmstrftime() function first returns the values without formatting, the second one returns the values in the desired string format.