What is the closest thing to 'date_default_timezone_set' in PHP4?

How can I achieve a similar effect to 'date_default_timezone_set' in PH开发者_开发技巧P4? I need to use the date() function while taking into account local time zones and also day light saving.

Edit: example with putenv:

putenv('TZ=Australia/Victoria');    
echo date('l jS \of F Y h:i:s A');

Outputs

Thursday 6th of October 2011 07:36:49 PM

Actual time here in Victoria

Friday 7th October 2011 06:36:49 AM

No solution came from this question. I ended up doing a manual work around using the Flash Player.

It looks like the TZ environment variable is what you would need to use for this. Using putenv() you should be able to dynamically change the timezone.

You can use:

ini_set("date.timezone", "Europe/Berlin"); // PHP 4

to sets the default timezone used by all date/time functions in a script!

Instead of using this function to set the default timezone in your script, you can also use the INI setting date.timezone to set the default timezone.

You can check with daylight function: date("I",time());