Incomplete list of timezones generated by PHP

Question

I've tried generating the complete set of timezones as specified in http://php.net/manual/en/timezones.php (except UTC) by using the following code:

$zones = timezone_identifiers_list();

print_r($zones);

But this list seems to skip ~ 50 regions, eg: Pacific/Samoa (as compared to http://php.net/manual/en/timezones.php)

What are we doing wrong?

phpinfo() shows:

PHP Version 5.3.4
Apache Version  Apache/2.2.3 (CentOS) 

$ uname -r
2.6.18-028stab070.14

Edit #2

date
date/time support   enabled
"Olson" Timezone Database Version   0.system
Timezone Database   internal
Default timezone    UTC

Pascal MARTIN · Accepted Answer · 2011-04-25T08:35:14.457

6

Your timezone database might not be up-to-date.

Try following the link at the bottom of the List of Supported Timezones page :

The latest version of the timezone database can be installed via PECL's » timezonedb.

Edit after the comments : to update your timezone database, as you are on a Linux system, you can use the pecl command (I just tried this on my Ubuntu machine) :

pecl upgrade timezonedb

This will download the new version, and compile it.

Then, if you enable the new timezonedb extension, your PHP should use an uptodate database :

php -dextension=timezonedb.so -i | grep Timezone
"Olson" Timezone Database Version => 2011.5
Timezone Database => external
Alternative Timezone Database => enabled
Timezone Database Version => 2011.5

If I try without enabling that new extension, I get the same kind of thing you had before :

php -i | grep Timezone
"Olson" Timezone Database Version => 0.system
Timezone Database => internal

edited Apr 25 '11 at 08:35

answered Apr 25 '11 at 08:10

Pascal MARTIN

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Furthermore, the DB version in use can be found at phpinfo()'s output ("date" section). – Álvaro González Apr 25 '11 at 08:13
1

@matt74tm - Unix `tzdata` != PHP `timezonedb`. – Álvaro González Apr 25 '11 at 08:22
@Álvaro @Pascal - i have installed the timezone db via yum install tzdata and the version is the output from rpm -q tzdata – siliconpi Apr 25 '11 at 08:23
@matt I've updated my answer with some additional informations ; hope this help :-) – Pascal MARTIN Apr 25 '11 at 08:35
@Pascal - thanks! i've made a bit of progress: php -i | grep Timezone "Olson" Timezone Database Version => 2011.5 Timezone Database => external Alternative Timezone Database => enabled Timezone Database Version => 2011.5 However, it still is not outputting Pacific/Samoa!! – siliconpi Apr 25 '11 at 09:14
@Pascal, @Álvaro G. Vicario - any thoughts on what's going wrong with my system? – siliconpi Apr 26 '11 at 01:35
Not really, I have to admit :-( – Pascal MARTIN Apr 26 '11 at 04:24

score 1 · Answer 2 · answered Apr 25 '11 at 08:04

1

Tested this on my server. No problem at all. Maybe this is a server-related issue?

output: timezones.php

source-code:

<?php

foreach(DateTimeZone::listIdentifiers() as $zone) {

    echo $zone.'<br/>';

}   

?>

Best, Christian

answered Apr 25 '11 at 08:04

cweinberger

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hmm - doesnt give Samoa for me ... :) – siliconpi Apr 25 '11 at 08:21
on your server or on my server? this is important as we can exclude the php environment. FYI: I am running MacOS X 10.6.7 on this machine. – cweinberger Apr 25 '11 at 08:22

score 0 · Answer 3 · edited May 23 '17 at 11:55

0

As Pascal MARTIN points out, the PHP time zone database is a PECL package. Since you are using a Linux host you shouldn't have any problem:

pecl install timezonedb

... or:

pecl upgrade timezonedb

Update:

I found a link with CentOS specific instructions:

http://www.electrictoolbox.com/correct-php-timezone/

You can also do a search:

C:\>pecl search timezonedb
Retrieving data...0%
MATCHED PACKAGES, CHANNEL PECL.PHP.NET:
=======================================
PACKAGE    STABLE/(LATEST) LOCAL
timezonedb 2011.5 (stable)       Timezone Database to be used with PHP's date and time functions

edited May 23 '17 at 11:55

Community

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answered Apr 25 '11 at 08:27

Álvaro González

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I did this: pecl upgrade timezonedb ; added at the end of /etc/php.ini extension=timezonedb.so ; restarted apache but no change in output – siliconpi Apr 25 '11 at 10:02
ie, i still dont see Pacific/Samoa! – siliconpi Apr 25 '11 at 11:06

score 0 · Answer 4 · edited May 23 '17 at 10:33

0

Try calling timezone_identifiers_list(DateTimeZone::ALL_WITH_BC). That worked for me. (Found this solution from this post: https://stackoverflow.com/a/5873059/323330)

edited May 23 '17 at 10:33

Community

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answered Feb 18 '12 at 15:43

Jonny Cook

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Incomplete list of timezones generated by PHP

4 Answers4

Update:

Linked