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Bug #65788 mktime return wrong month
Submitted: 2013-09-30 10:24 UTC Modified: 2013-09-30 10:38 UTC
From: condor at stz-bg dot com Assigned:
Status: Not a bug Package: Date/time related
PHP Version: 5.4.20 OS: Slackware 14.0 x64
Private report: No CVE-ID: None
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From: condor at stz-bg dot com
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 [2013-09-30 10:24 UTC] condor at stz-bg dot com 
Description:
------------
Hello,

Im trying to get with date and mktime one year back from now and I think function return me wrong values.

Test script:
---------------
echo "Date Y-M\n";
echo date("Y-m");
$r = date("Y-m", mktime(0, 0, 0, 1, date("m") - 12, date("Y")));
echo "\n", $r,"\n";


Expected result:
----------------
2013-09
2012-09


Actual result:
--------------
2013-09
2012-12

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 [2013-09-30 10:38 UTC] derick@php.net
-Status: Open +Status: Not a bug
 [2013-09-30 10:38 UTC] derick@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions.  Due to the volume
of reports we can not explain in detail here why your report is not
a bug.  The support channels will be able to provide an explanation
for you.

Thank you for your interest in PHP.

Please do this the right way:

$date = date_create("first day of this month 1 year ago");
echo $date->format('Y-m');
 
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