date_default_timezone_get
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Datum/Uhrzeit Funktionen
PHP Manual

# date_default_timezone_set

(PHP 5 >= 5.1.0)

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

### Beschreibung

bool date_default_timezone_set ( string `$timezone_identifier` )

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

> Hinweis: 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_WARNING` 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.

### Parameter-Liste

`timezone_identifier`

  The timezone identifier, like UTC or Europe/Lisbon. The list of valid identifiers is available in the Liste unterstützter Zeitzonen.

### Rückgabewerte

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

### Beispiele

Beispiel #1 Getting the default timezone

`<?php
date_default_timezone_set('America/Los_Angeles');
$script_tz = date_default_timezone_get();
if (strcmp($script_tz, ini_get('date.timezone'))){
echo 'Script timezone differs from ini-set timezone.';
} else {
echo 'Script timezone and ini-set timezone match.';
}
?>`

### Changelog

Version | Beschreibung
--- | ---
5.3.0 | Now throws `E_WARNING` rather then `E_STRICT`.
5.1.2 | The function started to validate the `timezone_identifier` parameter.

### Siehe auch

- date_default_timezone_get() - Gets the default timezone used by all date/time functions in a script
- Liste unterstützter Zeitzonen

date_default_timezone_get
date_diff
Datum/Uhrzeit Funktionen
PHP Manual