From: m dot konings at knowmany dot nl
Operating system: Windows
PHP version: 4.3.5
PHP Bug Type: Date/time related
Bug description: mktime() has problems with DST
Description:
------------
When iterating through a date value, day by day, I use the following code
a lot:
$cur_date = mktime(0, 0, 0, date('m', $cur_date), date('d', $cur_date)+1,
date('Y', $cur_date));
This used to work perfectly on PHP 4.3.4. But with 4.3.5 this call keeps
returning 27-3-2004 as soon as it hits this date. I guest this has
something to do with Daylight Saving Time. When you change to call to:
$cur_date = mktime(1, 0, 0, date('m', $cur_date), date('d', $cur_date)+1,
date('Y', $cur_date));
It actually works fine, so it turns out that 00:00:00 @ 28-3-2004 is
treated as 27-3-2004.
Reproduce code:
---------------
<?
$cur_date = mktime(0, 0, 0, 3, 1, 2004);
while($dummy++ < 31) {
echo date('d-m-Y', $cur_date)."<br>\n";
$cur_date = mktime(0, 0, 0, date('m', $cur_date), date('d', $cur_date)+1,
date('Y', $cur_date));
}
Expected result:
----------------
I expected to see the next list (as it worked on 4.3.4):
20-03-2004
21-03-2004
22-03-2004
23-03-2004
24-03-2004
25-03-2004
26-03-2004
27-03-2004
28-03-2004
29-03-2004
Actual result:
--------------
But I actually saw this:
20-03-2004
21-03-2004
22-03-2004
23-03-2004
24-03-2004
25-03-2004
26-03-2004
27-03-2004
27-03-2004
27-03-2004
--
Edit bug report at http://bugs.php.net/?id=27737&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=27737&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=27737&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=27737&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=27737&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=27737&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=27737&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=27737&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=27737&r=support
Expected behavior: http://bugs.php.net/fix.php?id=27737&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=27737&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=27737&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=27737&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=27737&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=27737&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=27737&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=27737&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=27737&r=float
