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date_format date_default_timezone_get

Last updated: Fri, 26 Jan 2007

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# date_default_timezone_set

(PHP 5 >= 5.1.0RC1)

date_default_timezone_set -- Sets the default timezone used by all date/time functions in a script

## Описание

bool date_default_timezone_set ( string timezone_identifier )

date_default_timezone_set() sets the default timezone used by all date/time functions.

> Замечание: Since PHP 5.1.0 (when the date/time functions were rewritten), every call to a date/time function will generate a `E_NOTICE` if the timezone isn't valid, and/or a `E_STRICT` message if using the system settings or the `TZ` environment variable.

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.

## Список параметров

`timezone_identifier`

  The timezone identifier, like `UTC` or `Europe/Lisbon`. The list of valid identifiers is available in the Прил. H.

## Возвращаемые значения

This function returns `FALSE` if the `timezone_identifier` isn't valid, or `TRUE` otherwise.

## Список изменений

Версия | Описание
--- | ---
5.1.2 | The function started to validate the `timezone_identifier` parameter.

## Смотрите также

date_default_timezone_get()

add a note User Contributed Notes
date_default_timezone_set
PeerGoal.com
12-Feb-2007 04:21
`The problem:
date() [function.date]: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Los_Angeles' for 'PST/-8.0/no DST' instead
Of course this is a problem that recently surfaced since PHP5. Quick fix is to set your time zone, add this line to your php code:
date_default_timezone_set("America/Los_Angeles");`
davidn at datalinktech dot com dot au
21-Dec-2006 05:27
`Note that there may be some unexpected side-effects that result from using either set_default_timezone() or the putenv("TZ=...") workalike for earlier PHP versions. ANY date formatted and output either by PHP or its apache host process will be unconditionally expressed in that timezone.
This does indeed include the web server's logs and other output files and reports which by default usually do not include any indication of timezone. This has a further side-effect on log processing and analysis, obviously.`
Chris
22-Nov-2006 10:14
`See the user contributed notes for the putenv function for a workaround for previous versions of PHP.`
add a note
date_format date_default_timezone_get

Last updated: Fri, 26 Jan 2007
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