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Bug #38777 get a day in the future
Submitted: 2006-09-11 07:15 UTC Modified: 2006-09-11 07:27 UTC
From: magnus at ronnerup dot se Assigned:
Status: Not a bug Package: Date/time related
PHP Version: 4.4.4 OS: linux (unknown dist.)
Private report: No CVE-ID: None
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From: magnus at ronnerup dot se
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 [2006-09-11 07:15 UTC] magnus at ronnerup dot se 
Description:
------------
It doesnt count to the right day. could be a summer/wintertime bug?

Reproduce code:
---------------
$order["journey_stay_first"] = 1161900000;

$adddays = $order["journey_stay_first"] + ( $_GET["x"] * 24 * 60 * 60);    
$journey_first_stay_date = date('ymd', $order["journey_stay_first"]);
$journey_last_stay_date = date('ymd', $adddays); 

Expected result:
----------------
$order["journey_stay_first"] = 1161900000;
x, start, end:
0, 06 10 27 12:00:00, 06 10 27 12:00:01
1, 06 10 27 12:00:00, 06 10 28 12:00:01
2, 06 10 27 12:00:00, 06 10 29 12:00:01
3, 06 10 27 12:00:00, 06 10 30 11:00:01
4, 06 10 27 12:00:00, 06 10 31 11:00:01

Actual result:
--------------
$order["journey_stay_first"] = 1161900000;
x, start, end:
0, 06 10 27 12:00:00, 06 10 27 12:00:01
1, 06 10 27 12:00:00, 06 10 28 12:00:01
2, 06 10 27 12:00:00, 06 10 29 12:00:01
3, 06 10 27 12:00:00, 06 10 29 11:00:01
4, 06 10 27 12:00:00, 06 10 30 11:00:01

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 [2006-09-11 07:27 UTC] johannes@php.net 
We are happy to tell you that you just discovered Daylight Savings
Time. For more information see:
http://webexhibits.org/daylightsaving/b.html
Instead of using mktime/date consider using gmmktime and gmdate which do
not suffer from DST.

You are not adding days but seconds as an offset.
 
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