date_default_timezone_get
date_format
Data/Czas
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

### Opis

bool date_default_timezone_set ( string `$timezone_identifier` )

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

> Informacja: 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.

### Parametry

`timezone_identifier`

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

### Zwracane wartości

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

### Rejestr zmian

Wersja | Opis
--- | ---
5.1.2 | The function started to validate the `timezone_identifier` parameter.

### Patrz także

- date_default_timezone_get()

date_default_timezone_get
date_format
Data/Czas
PHP Manual