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Validates that a value is a valid timezone identifier (e.g. Europe/Paris).

Applies to property or method
Class Timezone
Validator TimezoneValidator

Basic Usage

Suppose you have a UserSettings class, with a timezone field that is a string which contains any of the PHP timezone identifiers (e.g. America/New_York):

  • Attributes
  • YAML
  • XML
  • PHP
// src/Entity/UserSettings.php
namespace App\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class UserSettings
    protected $timezone;


As with most of the other constraints, null and empty strings are considered valid values. This is to allow them to be optional values. If the value is mandatory, a common solution is to combine this constraint with NotBlank.



type: string default: null

If the zone option is set to \DateTimeZone::PER_COUNTRY, this option restricts the valid timezone identifiers to the ones that belong to the given country.

The value of this option must be a valid ISO 3166-1 alpha-2 country code (e.g. CN for China).


type: array | string

It defines the validation group or groups of this constraint. Read more about validation groups.


type: boolean default: false

This constraint considers valid both the PHP timezone identifiers and the ICU timezones provided by Symfony's Intl component

However, the timezones provided by the Intl component can be different from the timezones provided by PHP's Intl extension (because they use different ICU versions). If this option is set to true, this constraint only considers valid the values compatible with the PHP \IntlTimeZone::createTimeZone() method.


type: string default: This value is not a valid timezone.

This message is shown if the underlying data is not a valid timezone identifier.

You can use the following parameters in this message:

Parameter Description
{{ value }} The current (invalid) value
{{ label }} Corresponding form field label


type: mixed default: null

This option can be used to attach arbitrary domain-specific data to a constraint. The configured payload is not used by the Validator component, but its processing is completely up to you.

For example, you may want to use several error levels to present failed constraints differently in the front-end depending on the severity of the error.


type: string default: \DateTimeZone::ALL

Set this option to any of the following constants to restrict the valid timezone identifiers to the ones that belong to that geographical zone:

  • \DateTimeZone::AFRICA
  • \DateTimeZone::AMERICA
  • \DateTimeZone::ANTARCTICA
  • \DateTimeZone::ARCTIC
  • \DateTimeZone::ASIA
  • \DateTimeZone::ATLANTIC
  • \DateTimeZone::AUSTRALIA
  • \DateTimeZone::EUROPE
  • \DateTimeZone::INDIAN
  • \DateTimeZone::PACIFIC

In addition, there are some special zone values:

  • \DateTimeZone::ALL accepts any timezone excluding deprecated timezones;
  • \DateTimeZone::ALL_WITH_BC accepts any timezone including deprecated timezones;
  • \DateTimeZone::PER_COUNTRY restricts the valid timezones to a certain country (which is defined using the countryCode option).
This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.