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Period is PHP's missing time range API. Based on ideas from Resolving Feature Envy in the Domain by Mathias Verraes, this package extends the concept to cover all basic operations regarding time ranges.


  • Represents Interval, Datepoint, Duration and Collection as value objects
  • Exposes named constructors to ease object creation
  • Covers all basic manipulations related to time range
  • Enables working with simple or complex time ranges logic
  • Fully documented
  • Framework-agnostic


Full documentation can be found at

System Requirements

You need PHP >= 7.2.0 but the latest stable version of PHP is recommended.


Install Period using Composer.

$ composer require league/period

or download the library and:

  • use any other PSR-4 compatible autoloader.
  • use the bundle autoloader script as shown below:
require 'path/to/period/repo/autoload.php';

use League\Period\Datepoint;

//returns new DateInterval('P1D');

where path/to/period/repo represents the path where the library was extracted.


Period has:

To run the tests, run the following command from the project folder.

$ composer test


Contributions are welcome and will be fully credited. Please see CONTRIBUTING and CONDUCT for details.


If you discover any security related issues, please email instead of using the issue tracker.


Please see CHANGELOG for more information on what has changed recently.



The MIT License (MIT). Please see LICENSE for more information.


PHP's time range API

Period Info

⭐ Stars 600
🔗 Source Code
🕒 Last Update a year ago
🕒 Created 7 years ago
🐞 Open Issues 1
➗ Star-Issue Ratio 600
😎 Author thephpleague