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Bug #53834 mktime returns wrong date if used zero prefix in day
Submitted: 2011-01-25 08:03 UTC Modified: 2011-01-25 10:28 UTC
From: jpachta at centrum dot cz Assigned:
Status: Not a bug Package: Date/time related
PHP Version: 5.3.5 OS: WinXP
Private report: No CVE-ID: None
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From: jpachta at centrum dot cz
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 [2011-01-25 08:03 UTC] jpachta at centrum dot cz 
Description:
------------
When used mktime() with parameters with zero prefix in days 2011-01-08 and  2011-01-09 the function returns timestamp for GMT: Thu, 30 Dec 2010 23:00:00 GMT

Example: note zeros in month and day parameters
mktime(0,0,0,01,08,2011)) returns wrong date GMT: Thu, 30 Dec 2010 23:00:00 GMT
mktime(0,0,0, 1,08,2011)) returns wrong date GMT: Thu, 30 Dec 2010 23:00:00 GMT
mktime(0,0,0, 1, 8,2011)) returns correct date
mktime(0,0,0,01, 8,2011)) returns correct date

Test script:
---------------
echo 'Current PHP version: ' . phpversion(); // Current PHP version: 5.3.5

date_default_timezone_set('Europe/Prague');

echo "------\r\n";

echo "2011-01-07 => ", date('Y-m-d', mktime(0,0,0,01,07,2011)), " ", mktime(0,0,0,01,07,2011), " OK\r\n";
echo "2011-01-08 => ", date('Y-m-d', mktime(0,0,0,01,08,2011)), " ", mktime(0,0,0,01,08,2011), " WR\r\n";
echo "2011-01-09 => ", date('Y-m-d', mktime(0,0,0,01,09,2011)), " ", mktime(0,0,0,01,09,2011), " WR\r\n";
echo "2011-01-10 => ", date('Y-m-d', mktime(0,0,0,01,10,2011)), " ", mktime(0,0,0,01,10,2011), " OK\r\n";

echo "------\r\n";

echo "2011-1-06 => ", date('Y-m-d', mktime(0,0,0,1,06,2011)), " ", mktime(0,0,0,1,06,2011), " OK\r\n";
echo "2011-1-07 => ", date('Y-m-d', mktime(0,0,0,1,07,2011)), " ", mktime(0,0,0,1,07,2011), " OK\r\n";
echo "2011-1-08 => ", date('Y-m-d', mktime(0,0,0,1,08,2011)), " ", mktime(0,0,0,1,08,2011), " WR\r\n";
echo "2011-1-09 => ", date('Y-m-d', mktime(0,0,0,1,09,2011)), " ", mktime(0,0,0,1,09,2011), " WR\r\n";
echo "2011-1-10 => ", date('Y-m-d', mktime(0,0,0,1,10,2011)), " ", mktime(0,0,0,1,10,2011), " OK\r\n";

echo "------\r\n";

echo "2011-1-6 => ", date('Y-m-d', mktime(0,0,0,1,6,2011)), " ", mktime(0,0,0,1,6,2011), " OK\r\n";
echo "2011-1-7 => ", date('Y-m-d', mktime(0,0,0,1,7,2011)), " ", mktime(0,0,0,1,7,2011), " OK\r\n";
echo "2011-1-8 => ", date('Y-m-d', mktime(0,0,0,1,8,2011)), " ", mktime(0,0,0,1,8,2011), " WR\r\n";
echo "2011-1-9 => ", date('Y-m-d', mktime(0,0,0,1,9,2011)), " ", mktime(0,0,0,1,9,2011), " WR\r\n";
echo "2011-1-10 => ", date('Y-m-d', mktime(0,0,0,1,10,2011))," ", mktime(0,0,0,1,10,2011), " OK\r\n";


echo "------\r\n";

echo "2011-01-6 => ", date('Y-m-d', mktime(0,0,0,01,6,2011)), " ", mktime(0,0,0,1,6,2011), " OK\r\n";
echo "2011-01-7 => ", date('Y-m-d', mktime(0,0,0,01,7,2011)), " ", mktime(0,0,0,1,7,2011), " OK\r\n";
echo "2011-01-8 => ", date('Y-m-d', mktime(0,0,0,01,8,2011)), " ", mktime(0,0,0,1,8,2011), " WR\r\n";
echo "2011-01-9 => ", date('Y-m-d', mktime(0,0,0,01,9,2011)), " ", mktime(0,0,0,1,9,2011), " WR\r\n";
echo "2011-01-10 => ", date('Y-m-d', mktime(0,0,0,01,10,2011)), " ", mktime(0,0,0,1,10,2011), " OK\r\n"; 


Expected result:
----------------
In the test script above you can compare initial date and returned date. In my case for days 08 and 09 it returned date of 2010-12-31 which is wrong.

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AllCommentsChangesGit/SVN commitsRelated reports
 [2011-01-25 08:08 UTC] jpachta at centrum dot cz 
Current PHP version: 5.3.5------
2011-01-07 => 2011-01-07 1294354800 OK
2011-01-08 => 2010-12-31 1293750000 WR
2011-01-09 => 2010-12-31 1293750000 WR
2011-01-10 => 2011-01-10 1294614000 OK
------
2011-1-06 => 2011-01-06 1294268400 OK
2011-1-07 => 2011-01-07 1294354800 OK
2011-1-08 => 2010-12-31 1293750000 WR
2011-1-09 => 2010-12-31 1293750000 WR
2011-1-10 => 2011-01-10 1294614000 OK
------
2011-1-6 => 2011-01-06 1294268400 OK
2011-1-7 => 2011-01-07 1294354800 OK
2011-1-8 => 2011-01-08 1294441200 OK // this was marked in the script as WR by mistake
2011-1-9 => 2011-01-09 1294527600 OK // this was marked in the script as WR by mistake
2011-1-10 => 2011-01-10 1294614000 OK
------
2011-01-6 => 2011-01-06 1294268400 OK
2011-01-7 => 2011-01-07 1294354800 OK
2011-01-8 => 2011-01-08 1294441200 OK // this was marked in the script as WR by mistake
2011-01-9 => 2011-01-09 1294527600 OK // this was marked in the script as WR by mistake
2011-01-10 => 2011-01-10 1294614000 OK

Process completed, Exit Code 0.
Execution time: 00:00.203
 [2011-01-25 10:28 UTC] derick@php.net
-Status: Open +Status: Bogus
 [2011-01-25 10:28 UTC] derick@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

Numbers with 0 are octal numbers. See the first warning at http://uk2.php.net/integer
 
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