Php/docs/function.date-default-timezone-set
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
date_default_timezone_set
( string $timezoneID
) : bool
date_default_timezone_set() sets the default timezone used by all date/time functions.
Note:
Since PHP 5.1.0 (when the date/time functions were rewritten), every call to a date/time function will generate a
E_NOTICE
if the timezone isn't valid, and/or aE_WARNING
message if using the system settings or theTZ
environment variable.
Instead of using this function to set the default timezone in your script, you can also use the INI setting date.timezone to set the default timezone.
Parameters
timezoneID
- The timezone identifier, like
UTC
,Africa/Lagos
,Asia/Hong_Kong
, orEurope/Lisbon
. The list of valid identifiers is available in the List of Supported Timezones.
Return Values
This function returns FALSE
if the
timezoneID
isn't valid, or TRUE
otherwise.
Examples
Example #1 Getting the default timezone
<?phpdate_default_timezone_set('America/Los_Angeles');$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.';}?>
See Also
- date_default_timezone_get() - Gets the default timezone used by all date/time functions in a script
- List of Supported Timezones