localtime
- localtime
Converts a time as returned by the time function to a 9-element list with the time analyzed for the local time zone. Typically used as follows:
All list elements are numeric and come straight out of the C `struct tm'.
$sec
,$min
, and$hour
are the seconds, minutes, and hours of the specified time.$mday
is the day of the month and$mon
the month in the range0..11
, with 0 indicating January and 11 indicating December. This makes it easy to get a month name from a list:$year
contains the number of years since 1900. To get a 4-digit year write:- $year += 1900;
To get the last two digits of the year (e.g., "01" in 2001) do:
- $year = sprintf("%02d", $year % 100);
$wday
is the day of the week, with 0 indicating Sunday and 3 indicating Wednesday.$yday
is the day of the year, in the range0..364
(or0..365
in leap years.)$isdst
is true if the specified time occurs during Daylight Saving Time, false otherwise.If EXPR is omitted,
localtime()
uses the current time (as returned by time(3)).In scalar context,
localtime()
returns the ctime(3) value:- $now_string = localtime; # e.g., "Thu Oct 13 04:54:34 1994"
The format of this scalar value is not locale-dependent but built into Perl. For GMT instead of local time use the gmtime builtin. See also the
Time::Local
module (for converting seconds, minutes, hours, and such back to the integer value returned by time()), and the POSIX module's strftime(3) and mktime(3) functions.To get somewhat similar but locale-dependent date strings, set up your locale environment variables appropriately (please see perllocale) and try for example:
Note that the
%a
and%b
, the short forms of the day of the week and the month of the year, may not necessarily be three characters wide.The Time::gmtime and Time::localtime modules provide a convenient, by-name access mechanism to the gmtime() and localtime() functions, respectively.
For a comprehensive date and time representation look at the DateTime module on CPAN.
Portability issues: localtime in perlport.