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Re: strtotime() not able to handle 04/29 correctly??? [message #177221 is a reply to message #177220]

Wed, 29 February 2012 20:19

Peter H. Coffin
Messages: 245
Registered: September 2010

Karma:

Senior Member

On Wed, 29 Feb 2012 10:41:34 -0800 (PST), cerr wrote:
> Hi,
>
> I calculate the amount of days between two dates like this:
>
> $start = strtotime($_SESSION['sdate']);
> $end = strtotime($_SESSION['hdate']);
> echo ($end - $start);
> $duration = ($end - $start) / 3600 /24;
> $duration+=1; //plus one day
> echo " The ad will show for ".$duration." day(s)<br/>";
>
> Which generally works fine but things seem to mess up when I have a
> start sdate of 2012-02-29 and an hdate of 2012-04-01. I get a duration
> of: 32.9583333333
> Why is this? That's messing up my calculations. Is there a better way
> to do this?

"Note:

Using this function for mathematical operations is not advisable. It is
better to use DateTime::add() and DateTime::sub() in PHP 5.3 and later,
or DateTime::modify() in PHP 5.2."

Be that as it may...

What result are you expecting? 2012-02-29 to 2012-04-01 is 32 days isn't
it? Plus the 1 you're adding for no obvious reason would be 33, and
rounding the result you *did* get comes out 33..

--
"The last refuge of the insomniac is a sense of superiority to the
sleeping world."
--Leonard Cohen, The Favourite Game

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[Message index]

		strtotime() not able to handle 04/29 correctly??? By: cerr on Wed, 29 February 2012 18:41
		Re: strtotime() not able to handle 04/29 correctly??? By: Peter H. Coffin on Wed, 29 February 2012 20:19
		Re: strtotime() not able to handle 04/29 correctly??? By: Jerry Stuckle on Wed, 29 February 2012 21:21
		Re: strtotime() not able to handle 04/29 correctly??? By: Doug Miller on Wed, 29 February 2012 23:24
		Re: strtotime() not able to handle 04/29 correctly??? By: Eli the Bearded on Thu, 01 March 2012 00:25
		Re: strtotime() not able to handle 04/29 correctly??? By: The Natural Philosoph on Thu, 01 March 2012 00:46
		Re: strtotime() not able to handle 04/29 correctly??? By: Doug Miller on Thu, 01 March 2012 01:28

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