This module tries to automatically detect the visitor's time zone (using JavaScript) and adjusts the times shown in your forum accordingly. This will work for both logged in and anonymous users.
By default, all time zone offests will be automatically determined by the time zone offset on the visitor's computer. For authenticated users and anonymous users that have cookies enabled in their browser, the time zone will be checked once per day. If an anonymous visitor does not have cookies enabled, that visitor's IP address will be stored with the offset information. In this case the time zone will be checked every two hours to avoid issues with dynamic and/or roaming IP's.
In the settings page, the admin can allow registered users to override the automatic timezone with one of there own choosing. To use this option, you must enable the option "Allow Time Zone Selection" in the User Settings section of the General Settings page in the admin section as well.
Initial coding of this module idea was done by Joe Curia (a.k.a. Azumandias). Maurice Makaay did a full rewrite in version 6.0.0, making use of new Phorum features to make the module more efficient and to fix some small remaining bugs.
Changelog:
----------
2012-07-07 v6.0.2 (Maurice Makaay)
- Fixed a PHP error:
"Unsupported operand types in .../include/format_functions.php on
line 248."
2011-04-02 v6.0.1 (Maurice Makaay)
- Fixed a PHP warning:
Missing argument 1 for phorum_mod_automatic_timezones_addon()
2011-04-01 v6.0.0 (Maurice Makaay)
- A full rewrite of the module, taking Joe's ideas to the next level,
making optimal use of new features in the Phorum core.
- Extracted logic into a separate api.php, for code clarity. The module
code has been simplified into using only three hooks.
- Moved the javascript code into the global Phorum javascript (still
only triggering this code when the timezone needs to be determined).
- The module now uses the addon hook to handle posting the offset
from the client to the module. The redirection code has been improved,
to not have to fiddle with the active URL to include the offset in
the request (which could cause issues with systems that use their own
URL formatting schema for things like friendly URLs or embedding Phorum).
- New offset caching mechanism, to minimize local impact:
- When cookie storage is available for the client, then no local caching
of offsets is done anymore.
- When cookie storage is unavailable, then registered users will have
their offset stored in the user's settings data. For unregistered
users, the offset is cached based on the IP address of the user.
- Keeping the IP-cache limited (to prevent db storage overflow) has
been optimized to not delete all entries on overflow, but only
to trim down the cache to 80% of the maximum allowed storage.
- Fixed some buggy behavior that showed for users that configured their
own timezone in the Control Center (when saving settings, the selected
time zone was stored, but the settings panel would show the
automatically determined time zone instead).
- Fixed the bug that caused the PHP Notice "Undefined index: REMOTE_ADDR
in .../automatic_timezones.php on line 79" when executing the
script.php.
2009-04-02 v5.2.1.05 (Joe Curia)
- Enhancement: Module rewritten to place the necessary javascript inside the
header. This allows for browsers without javascript to view the page
without any negative consequences without the need for the excessive
browscap support. Thanks go to Phorum developer Maurice Makaay for
pointing me in the right direction on this.
2009-03-28 v5.2.1.04 (Joe Curia)
- Bugfix: Previous coding required the user's browser to support javascript.
To work around this, the module now checks if the user's browser is
capable of supporting javacript before running. If the user has disabled
javascript, a meta refresh will kick in after 2 seconds the first time
they visit the forum. After that their IP Address will be cached.
Thanks go to Phorum user didi2 for reporting this bug.
- Bugfix: Eliminated some PHP notices.
2009-02-04 v5.2.1.03 (Joe Curia)
- Bugfix: Users in the GMT time zone (i.e. 0 offset) would experience an
infinite loop. Thanks go to Phorum user ExIslander for reporting this
bug.
2008-12-15 v5.2.1.02 (Joe Curia)
- Enhancement: Added support for the Recent Messages module and other
modules which might call the phorum_api_user_save() function before
displaying dates.
2008-10-22 v5.2.1.01 (Joe Curia)
- Bugfix: Fixed a bug that caused the cc_panel hook in other modules to
fail. Thank you Maurice Makaay for this fix.
2008-10-20 v5.2.1.00 (Joe Curia)
- Started.
Thanks go to these bug hunters:
didi2
Exislander
James E.
Maurice Makaay
Phil Connolly
Rob Granger
Joe Curia (aka Azumandias)
Modules: l0Admin Mass Email00000000l000000Automatic Time Zones000ll.l00000Enhanced Custom Profiles0.00Google Calendar0000l.l000000Post Previews
000000000Admin Security Suite000000000000Check Modules for Upgrades0000External Authentication000000Group Auto-Email00000.00000Private Message Alerts
000000000Attachment Download Counter0000Custom Attachment Icons000ll.ll00Favorite Forums000000.00000Highlighted Search Terms0000Self-Delete Posts Option
000000000Attachment Watermarks0l00000000Custom Language Database00l.l.0Forum Lockdown00000.00000Ignore Forums0000000000000Threaded Tree View
000000000Automatic Message Pruning00.llll.00Easy Color Scheme Manager0l.l00Forum Subscriptions0000lll000Moderated User Group
Templates:lGeneric Integration000000000 0000Simple Rounded000000 00000000Tabbed Emerald
Edited 6 time(s). Last edit at 07/07/2012 06:30AM by Maurice Makaay.
Attachments:
open |
download -
automatic_timezones-6.0.2.tar.gz
(5.7 KB)
open |
download -
automatic_timezones-6.0.2.zip
(8 KB)
my blog 
linkedin profile 
secret sauce
