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Bug #64401 21 March 2012 Strange result
Submitted: 2013-03-11 07:29 UTC Modified: 2013-03-12 06:41 UTC
From: mohsen dot taheri at gmail dot com Assigned:
Status: Not a bug Package: Date/time related
PHP Version: 5.3Git-2013-03-10 (Git) OS: Ubuntu
Private report: No CVE-ID: None
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From: mohsen dot taheri at gmail dot com
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 [2013-03-11 07:29 UTC] mohsen dot taheri at gmail dot com
strtotime("2012-03-21 00:00:01") return value is the same as strtotime("2012-03-21 01:00:01")
both of the are 1332276001
this problem range is 2012-03-21 00:00:00 to 2012-03-21 01:00:00
I don't face this problem in any other dates 

Test script:
echo date("Y-m-d H:i:s", strtotime("2012-03-21 00:00:01"))."\n";
echo date("Y-m-d H:i:s", strtotime("2012-03-21 01:00:01"))."\n";

Expected result:
2012-03-21 00:00:01
2012-03-21 01:00:01

Actual result:
2012-03-21 01:00:01
2012-03-21 01:00:01


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 [2013-03-11 12:24 UTC]
-Status: Open +Status: Feedback
 [2013-03-11 12:24 UTC]
Which timezone? You probably discovered DST in your timezone.
 [2013-03-12 06:23 UTC] mohsen dot taheri at gmail dot com
-Status: Feedback +Status: Open
 [2013-03-12 06:23 UTC] mohsen dot taheri at gmail dot com
I use date_default_timezone_set("Asia/Tehran");
2012-03-21 is the second day of year in Tehran timezone !!!
 [2013-03-12 06:39 UTC]
Right, so your result is correct. In 2012 Daylight Savings Time started Midnight 
between Tuesday, March 20 and Wednesday, March 21 where the clocks were set ahead 
by 1 hour. That means that 1 second after midnight became 1 second after 1am 
exactly as you are seeing. So there was never a 2012-03-21 00:00:01.
 [2013-03-12 06:39 UTC]
-Status: Open +Status: Not a bug
 [2013-03-12 06:41 UTC] mohsen dot taheri at gmail dot com
Sorry, this was my mistake :(
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