To customize and use the Symfony profiler toolbar, you can follow these steps:
Enable the profiler: Make sure the profiler is enabled in your Symfony application. You can do this by checking the framework.profiler configuration in your config/packages/dev/framework.yaml file.
Access the profiler toolbar: Open your Symfony application in a web browser, and you should see the profiler toolbar at the bottom of the page.
Customize the toolbar: You can customize the profiler toolbar by clicking on the settings icon (gear icon) on the toolbar. This will open a settings panel where you can customize which information is displayed in the toolbar.
Add custom data: You can also add custom data to the profiler toolbar by creating a custom collector. To do this, you can create a new class that extends \Symfony\Component\HttpKernel\DataCollector\DataCollector and implements the required methods. You can then add this collector to the Symfony container and configure it to display the custom data in the profiler toolbar.
Customize the toolbar theme: You can customize the theme of the profiler toolbar by overriding the default CSS styles. You can do this by creating a new CSS file in your assets directory and including it in your Twig template.
By following these steps, you can customize and use the Symfony profiler toolbar to display the information that is most relevant to you and your application.