Section: User Contributed Perl Documentation (3pm)
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Date::Parse - Parse date strings into time values
$time = str2time($date);
($ss,$mm,$hh,$day,$month,$year,$zone) = strptime($date);
provides two routines for parsing date strings into time values.
- str2time(DATE [, ZONE])
"str2time" parses "DATE" and returns a unix time value, or undef upon failure.
"ZONE", if given, specifies the timezone to assume when parsing if the
date string does not specify a timezone.
- strptime(DATE [, ZONE])
"strptime" takes the same arguments as str2time but returns an array of
values "($ss,$mm,$hh,$day,$month,$year,$zone)". Elements are only defined
if they could be extracted from the date string. The $zone element is
the timezone offset in seconds from GMT. An empty array is returned upon
Date::Parse is capable of parsing dates in several languages, these include
English, French, German and Italian.
$lang = Date::Language->new('German');
$lang->str2time("25 Jun 1996 21:09:55 +0100");
Below is a sample list of dates that are known to be parsable with Date::Parse
Wed, 16 Jun 94 07:29:35 CST Comma and day name are optional
Thu, 13 Oct 94 10:13:13 -0700
Wed, 9 Nov 1994 09:50:32 -0500 (EST) Text in ()'s will be ignored.
21 dec 17:05 Will be parsed in the current time zone
1999 10:02:18 "GMT"
16 Nov 94 22:28:20 PST
Date::Parse uses Time::Local internally, so is limited to only parsing dates
which result in valid values for Time::Local::timelocal. This generally means dates
between 1901-12-17 00:00:00 GMT
and 2038-01-16 23:59:59 GMT
When both the month and the date are specified in the date as numbers
they are always parsed assuming that the month number comes before the
date. This is the usual format used in American dates.
The reason why it is like this and not dynamic is that it must be
deterministic. Several people have suggested using the current locale,
but this will not work as the date being parsed may not be in the format
of the current locale.
My plans to address this, which will be in a future release, is to allow
the programmer to state what order they want these values parsed in.
Graham Barr <firstname.lastname@example.org
Copyright (c) 1995-2009 Graham Barr. This program is free
software; you can redistribute it and/or modify it under the same terms
as Perl itself.
- MULTI-LANGUAGE SUPPORT
- EXAMPLE DATES