CODEWITHSUNDEEP
php
Falya
Falya

Reputation: 181

DateTimeZone error: Unknown or bad timezone

I am trying to run this script:

<?php
$d = new DateTime('now', new DateTimeZone('Asia/Kolkata'));
$time = $d->format('H:i');

echo $time;
?>

but I got this error:

Fatal error: Uncaught exception 'Exception' with message 'DateTimeZone::__construct() [<a href='function.DateTimeZone---construct'>function.DateTimeZone---construct</a>]: Unknown or bad timezone (Asia/Kolkata)

Though it works well for Asia/Dacca for example. What could be the problem and how to fix it?

Upvotes: 18

Views: 54345

Answers (7)

Serious Angel
Serious Angel

Reputation: 1555

The error may come from certain versions of Carbon itself which uses PHP functions DateTimeZone::listAbbreviations and timezone_open, and the former may include zones not supported by the latter in certain environments.

// "nesbot/carbon" PHP package (v2.72.1)

protected static function getDateTimeZoneFromName(&$name)
{
    return @timezone_open($name = (string) static::getDateTimeZoneNameFromMixed($name));
}

// ...

public function getAbbreviatedName($dst = false)
{
    $name = $this->getName();

    foreach ($this->listAbbreviations() as $abbreviation => $zones) {
        foreach ($zones as $zone) {
            if ($zone['timezone_id'] === $name && $zone['dst'] == $dst) {
                return $abbreviation;
            }
        }
    }

    return 'unknown';
}

// ...

public static function instance($object = null, $objectDump = null)
{
    // ...

    if (Carbon::isStrictModeEnabled()) {
        throw new InvalidTimeZoneException('Unknown or bad timezone ('.($objectDump ?: $object).')');
    }

    return false;
}

Source

Issue

The above Carbon technique, in turn, may process possibly deprecated timezones which are expected to be aliased but may be missing in places Carbon expects those to see. For example, Kiev and Kyiv:

[tz-announce] 2022b release of tz code and data available

Paul Eggert eggert at cs.ucla.edu
Thu Aug 11 00:36:51 UTC 2022
...

  • Rename Europe/Kiev to Europe/Kyiv.

Source

$ php -r 'var_dump(timezone_open("Europe/Kiev"));';
PHP Warning:  timezone_open(): Unknown or bad timezone (Europe/Kiev) in Command line code on line 1
bool(false)

$ NO_COLOR=1 ./artisan tinker --execute 'dump((string) now("Europe/Kiev"))';
Carbon\Exceptions\InvalidFormatException  Unknown or bad timezone (Europe/Kiev).

Solution

Let's install Debian package tzdata-legacy.

$ php -r 'var_dump(timezone_open("Europe/Kiev"));';
object(DateTimeZone)#1 (2) {
  ["timezone_type"]=>
  int(3)
  ["timezone"]=>
  string(11) "Europe/Kiev"
}

$ NO_COLOR=1 ./artisan tinker --execute 'dump((string) now("Europe/Kiev"))';
"2025-02-07 13:55:22"

Upvotes: 0

Denis Sinyukov
Denis Sinyukov

Reputation: 576

You are using an old database with a list of timezones, upgrade it via pecl. The latest version of the timezone database can be installed via PECL -timezonedb.

pecl upgrade timezonedb OR pecl install timezonedb

Upvotes: 0

Bhavin Joshi
Bhavin Joshi

Reputation: 522

I was able to fix this issue by renaming /etc/localtime.

Upvotes: -1

Alex
Alex

Reputation: 1295

I've got same problem when try to run webserver in CHROOT jail. In this case chrooted dir can not contain Linux timezone files. If it's your case and you have access to webserver files simple copy all files to chroot jail:

For CentOS it's

cp -R /usr/share/zoneinfo/ /MY_CHROOT_DIR/usr/share/

Upvotes: 4

dev4life
dev4life

Reputation: 11394

PHP timezone database has been updated in version 5.3. Try installing that and try again

Upvotes: -1

Elzo Valugi
Elzo Valugi

Reputation: 27866

Try this for fun.

$timezones = array('Europe/London', 'Mars/Phobos', 'Asia/Kolkata');

foreach ($timezones as $tz) {
    try {
        $mars = new DateTimeZone($tz);
    } catch(Exception $e) {
        echo $e->getMessage() . '<br />';
    }
}

Upvotes: 3

Alin P.
Alin P.

Reputation: 44346

And welcome to StackOverflow! If you haven't already make some time to read the FAQ.

I tried your example and it worked for me with PHP 5.3.1 and "Olson" Timezone Database Version 2009.18 .

You should do a phpinfo() and see what time zone DB version you have and if it's older update it. You can see in this list that the most recent version, 2011.1, has Asia/Kolkata.

Upvotes: 4

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