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The current branch stable points to the upcoming version of Collision v5. If you are looking for the v4 source code, please head over to: v4.x.

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Collision was created by, and is maintained by Nuno Maduro, and is a package designed to give you beautiful error reporting when interacting with your app through the command line.

  • It's included on Laravel, the most popular free, open-source PHP framework in the world.
  • Built on top of the Whoops error handler.
  • Supports Laravel, Symfony, PHPUnit, and many other frameworks.

Installation & Usage

Requires PHP 7.2.5+

Require Collision using Composer:

composer require nunomaduro/collision --dev

Lumen adapter

Configure the Collision service provider:

// bootstrap/app.php:

Phpunit adapter

Phpunit must be 9.0 or higher.

Add the Collision printerClass to your phpunit.xml in the phpunit section:


No adapter

You need to register the handler in your code:

(new \NunoMaduro\Collision\Provider)->register();


Thank you for considering to contribute to Collision. All the contribution guidelines are mentioned here.

You can have a look at the CHANGELOG for constant updates & detailed information about the changes. You can also follow the twitter account for latest announcements or just come say hi!: @enunomaduro

Support the development

Do you like this project? Support it by donating


Collision is an open-sourced software licensed under the MIT license.

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