gmtime
gmtime expr
Converts a time string as returned by the time
function to a nine-element list
with the time correct for Greenwich Mean Time zone (a.k.a. GMT,
UTC, etc.). Typically used as follows:
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = gmtime(time);
All list elements are numeric and come straight out of a C
language struct tm
. In
particular, this means that $mon
has the range 0..11
, $wday
has the range 0..6
, and the year has had 1,900
subtracted from it. (You can remember which elements are 0
-based because you’re always using
these as subscripts into 0
-based arrays containing month and day
names.) If expr
is omitted, it does
gmtime(time)
. For example, to
print the current month in London:
$london_month = (qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec))[(gmtime)[4]];
The Perl library module Time::Local contains a subroutine,
timegm( )
, that can convert in
the opposite direction.
In scalar context, gmtime
returns a ctime(3)
-like string
based on the GMT time value.
3.22.61.30