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date_default_timezone_set
(PHP 5 >= 5.1.0, PHP 7)
date_default_timezone_set — Sets the default timezone used by all date/time functions in a script
Description
$timezone_identifier
) : booldate_default_timezone_set() sets the default timezone used by all date/time functions.
Note:
Since PHP 5.1.0 (when the date/time functions were rewritten), every call to a date/time function will generate a
E_NOTICEif the timezone isn't valid, and/or aE_WARNINGmessage 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.
Parameters
-
timezone_identifier -
The timezone identifier, like UTC or Europe/Lisbon. The list of valid identifiers is available in the List of Supported Timezones.
Return Values
This function returns FALSE if the
timezone_identifier isn't valid, or TRUE
otherwise.
Examples
Example #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 | Description |
|---|---|
| 5.3.0 |
Now throws E_WARNING rather than
E_STRICT.
|
| 5.1.2 |
The function started to validate the
timezone_identifier parameter.
|
See Also
- date_default_timezone_get() - Gets the default timezone used by all date/time functions in a script
- List of Supported Timezones
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