Compare Date and Time

anne has asked for the wisdom of the Perl Monks concerning the following question:

I have two dates and times I have to compare. I have current_date and requested_date(in the format of mm/dd/yr hr:min:sec). I have to check the difference between the two and do some processing if the time difference is >= 1hr. I was doing it initially with compaing the times but later realized that if requested date is between 23:00 and 24:00 of a day then this condition will nevere be reached. Any other ideas on how can I get the diffrence?

$cur_time = GetCurrentTime();
 ($cdate, $ctime) = split(/ /, $cur_time);
  ($chour,$cmin,$csec) = split(/:/, $ctime);
$current_time = ($chour*3600) + ($cmin*60) + $csec;
same way for the req time:
$requested_time = ($hour*3600) + ($min*60) + $sec;

if (($current_time - $requested_time) >= 3600
Do processing.....
[download]

I tried the above code....

Comment on Compare Date and Time Download Code

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Re: Compare Date and Time by marto (Cardinal) on May 09, 2006 at 15:22 UTC
Hi anne, Check out the module Date::Calc. In the documentation there is a recipe titled "How do I compare two dates with times? How do I check whether two dates and times lie more or less than a given time interval apart?" which should be of use to you. Hope this helps. Martin	[reply]
Re: Compare Date and Time by davorg (Chancellor) on May 09, 2006 at 16:10 UTC
This is why Time::Local is included in the standard Perl distribution. -- <http://dave.org.uk> "The first rule of Perl club is you do not talk about Perl club." -- Chip Salzenberg	[reply]
Re: Compare Date and Time by blazar (Canon) on May 09, 2006 at 15:23 UTC
This kind of question get asked so often... and the general answer is to use a suitable date/time managing module. Two such modules (that I have tried) are DateTime and Date::Calc. Try reading their respective documentations to see if they suit your needs.	[reply]
Re: Compare Date and Time by McDarren (Abbot) on May 09, 2006 at 15:48 UTC
There are also plenty of answers to this type of question in the Q&A section of the Monastery.	[reply]