#35660 [Csd]: AIX TZ variable format not understood, yields UTC timezone

ID: 35660 Updated by: derick@php.net Reported By: Bjorn dot Wiberg at its dot uu dot se Status: Closed Bug Type: Date/time related Operating System: IBM AIX 5.2.0.0 ML5 PHP Version: 5.1.1 Assigned To: derick New Comment: Fixed in the way that we check if you pass an invalid setting for the TZ string, and if you do, we fall back to the ini setting if it exists. Previous Comments: ------------------------------------------------------------------------ [2005-12-20 20:54:23] derick@php.net This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. ------------------------------------------------------------------------ [2005-12-18 10:40:38] Bjorn dot Wiberg at its dot uu dot se Hello Derick! Thank you for your reply! Yes, I know, however, performance is not a big issue for us in this case. It would be great if those AIX timezones could be added to the built-in database of known timezones of PHP, or perhaps even better, if PHP would default to the date.timezone setting if TZ is considered invalid (the latter is probably easier to achieve and would cover *all* platforms with "special" TZ formats). Please e-mail me if you need us to carry out any AIX tests for you! Wishing you a Merry Christmas and a Happy New year! Best regards, Björn ------------------------------------------------------------------------ [2005-12-17 18:41:02] derick@php.net Just to let you know, using the date_default_timezone_set() function is preferred over using the TZ env setting as it's faster. ------------------------------------------------------------------------ [2005-12-13 19:28:32] Bjorn dot Wiberg at its dot uu dot se Description: ------------ PHP does not understand the notion of the TZ environment variable that IBM AIX uses, and defaults to the UTC time zone if an "incorrect" TZ value is encountered. The format of the TZ variable, and the allowed values, can be found here: http://publib.boulder.ibm.com/infocenter/pseries/index.jsp?topic=/com.ibm.aix.doc/files/aixfiles/environment.htm If this could be considered for future releases, that would be a great relief. As many (all?) other software on the system seem to use the TZ correctly. Otherwise, it would be great if the date.timezone setting would act as a fallback in case the TZ environment variable is considered invalid by PHP. And, perhaps, that this is clarified in the documentation (http://se.php.net/manual/sv/function.date-default-timezone-get.php); i.e., that an incorrect TZ value directly yields a "UTC" timezone setting. Reproduce code: --------------- System environment configuration file /etc/environment contains: TZ=NFT-1DFT,M3.5.0/02:00:00,M10.5.0/03:00:00 httpd.conf contains: php_value date.timezone "Europe/Stockholm" PHP script that displays the reverting-to-UTC behavior of PHP: <?php // putenv('TZ=NFT-1DFT,M3.5.0/02:00:00,M10.5.0/03:00:00'); echo 'TZ is: ' . getenv('TZ') . '<BR>'; echo 'date.timezone is: ' . ini_get('date.timezone') . '<BR>'; echo 'date_default_timezone_get() returns: ' . date_default_timezone_get() . '<BR>'; echo 'Current time is: ' . strftime('%T') . '<BR>'; echo '<BR>'; echo 'Forcing the correct timezone (' . ini_get('date.timezone') . ')...<BR>'; date_default_timezone_set(ini_get('date.timezone')); echo 'Correct current time is: ' . strftime('%T') . '<BR>'; ?> Expected result: ---------------- That the timezone is picked up and understood by PHP. This would equal the "Europe/Stockholm" timezone setting. That is: TZ is: NFT-1DFT,M3.5.0/02:00:00,M10.5.0/03:00:00 date.timezone is: Europe/Stockholm date_default_timezone_get() returns: Europe/Stockholm Current time is: 19:20:10 Forcing the correct timezone (Europe/Stockholm)... Correct current time is: 19:20:10 Actual result: -------------- TZ is: NFT-1DFT,M3.5.0/02:00:00,M10.5.0/03:00:00 date.timezone is: Europe/Stockholm date_default_timezone_get() returns: UTC Current time is: 18:20:10 Forcing the correct timezone (Europe/Stockholm)... Correct current time is: 19:20:10 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=35660&edit=1