From:
Operating system: 64 bit Centos
PHP version: 5.2.14
Package: Date/time related
Bug Type: Bug
Bug description:DateTime->setTimezone() very slow far future dates
Description:
------------
DateTime->setTimezone() is very slow on dates in the far future (or
history), and the time needed isnt monotonic for greater dates.
ie. setTimezone() on a DateTime(PHP_INT_MAX) /* 64 bit max */ takes 0.05
seconds, but takes 250 whole seconds for PHP_INT_MAX/2 .
Using the $timezone parameter of the DateTime constructor is always fast
though.
Test script:
---------------
$start = microtime(1);
$date = new DateTime('@'.(PHP_INT_MAX));
// $date = new DateTime('@'.(int)(PHP_INT_MAX / 2));
$date->setTimezone(new DateTimeZone('Europe/Amsterdam'));
echo microtime(1) - $start;
Expected result:
----------------
A faster change of the timezone; performance equal to using the constructor
parameter
--
Edit bug report at http://bugs.php.net/bug.php?id=53294&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=53294&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=53294&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=53294&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=53294&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=53294&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=53294&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=53294&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=53294&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=53294&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=53294&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=53294&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=53294&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=53294&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=53294&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53294&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=53294&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=53294&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=53294&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=53294&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=53294&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=53294&r=mysqlcfg
