date_date_set
date_default_timezone_get() will still emit a warning in E_STRICT if the timezone is not set; either by date_default_timezone_set() or the ini option of date.timezone.
This is probably not a big deal, but I thought I would contribute what I found.
date_default_timezone_get
(PHP 5 >= 5.1.0)
date_default_timezone_get — Gets the default timezone used by all date/time functions in a script
Description
string date_default_timezone_get
( void
)
In order of preference, this function returns the default timezone by:
-
Reading the timezone set using the date_default_timezone_set() function (if any)
-
Prior to PHP 5.4.0 only: Reading the TZ environment variable (if non empty)
-
Reading the value of the date.timezone ini option (if set)
-
Prior to PHP 5.4.0 only: Querying the host operating system (if supported and allowed by the OS). This uses an algorithm that has to guess the timezone. This is by no means going to work correctly for every situation. A warning is shown when this stage is reached. Do not rely on it to be guessed correctly, and set date.timezone to the correct timezone instead.
If none of the above succeed, date_default_timezone_get() will return a default timezone of UTC.
Return Values
Returns a string.
Changelog
| Version | Description |
|---|---|
| 5.4.0 | The TZ environment variable is no longer used to guess the timezone. |
| 5.4.0 | The timezone is no longer guessed from information available through the operating system as the guessed timezone can not be relied on. |
Examples
Example #1 Getting the default timezone
<?php
date_default_timezone_set('Europe/London');
if (date_default_timezone_get()) {
echo 'date_default_timezone_set: ' . date_default_timezone_get() . '<br />';
}
if (ini_get('date.timezone')) {
echo 'date.timezone: ' . ini_get('date.timezone');
}
?>
The above example will output something similar to:
date_default_timezone_set: Europe/London date.timezone: Europe/London
Example #2 Getting the abbreviation of a timezone
<?php
date_default_timezone_set('America/Los_Angeles');
echo date_default_timezone_get() . ' => ' . date('e') . ' => ' . date('T');
?>
The above example will output:
America/Los_Angeles => America/Los_Angeles => PST
See Also
- date_default_timezone_set() - Sets the default timezone used by all date/time functions in a script
- List of Supported Timezones
add a note
User Contributed Notes
date_default_timezone_get - [4 notes]
dohpaz at gmail dot com ¶
6 years ago
glennpratt+php at gmail dot com ¶
2 years ago
In my case, I'm not sure I can guess the correct timezone any better than PHP and it's no where near important enough to nag the user, so...
<?php
// Suppress DateTime warnings
date_default_timezone_set(@date_default_timezone_get());
?>
Damien dot Garrido dot Work at gmail dot com ¶
11 months ago
To get offset string from offset:
<?php
function timezone_offset_string( $offset )
{
return sprintf( "%s%02d:%02d", ( $offset >= 0 ) ? '+' : '-', abs( $offset / 3600 ), abs( $offset % 3600 ) );
}
$offset = timezone_offset_get( new DateTimeZone( 'Pacific/Kiritimati' ), new DateTime() );
echo "offset: " . timezone_offset_string( $offset ) . "\n";
$offset = timezone_offset_get( new DateTimeZone( 'Pacific/Tahiti' ), new DateTime() );
echo "offset: " . timezone_offset_string( $offset ) . "\n";
?>
Output:
offset: +14:00
offset: -10:00
harmor ¶
5 years ago
If you want to get the abbrivation (3 or 4 letter), instead of the long timezone string you can use date('T') function like this:
Input:
date_default_timezone_set('America/Los_Angeles');
echo date_default_timezone_get();
echo ' => '.date('e');
echo ' => '.date('T');
Output:
America/Los_Angeles => America/Los_Angeles => PST