Yii Framework Debug Panel Extension



Yii Debug Extension

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This extension provides a debugger for Yii framework applications. When this extension is used, a debugger toolbar will appear at the bottom of every page. The extension also provides a set of standalone pages to display more detailed debug information.


  • PHP 8.1 or higher.


The package could be installed with Composer:

composer require yiisoft/yii-debug --dev

The debug extension also can be installed without the --dev flag if you want to collect data in production. Specify needed collectors only to reduce functions overriding and improve performance.

General usage

Once the extension is installed, modify your config/common/params.php as follows:

return [
    'yiisoft/yii-debug' => [
        'enabled' => true,
    // ...

All included collectors start listen and collect payloads from each HTTP request or console run.

Install both yiisoft/yii-debug-api and yiisoft/yii-dev-panel to be able to interact with collected data through UI.


If you need help or have a question, the Yii Forum is a good place for that. You may also check out other Yii Community Resources.


The Yii Debug Extension is free software. It is released under the terms of the BSD License. Please see LICENSE for more information.

Maintained by Yii Software.

Support the project

Open Collective

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