Warning: You are browsing the documentation for version 4.1 which is not maintained anymore.
If some of your projects are still using this version, consider upgrading.
The profiler is a powerful development tool that gives detailed information about the execution of any request.
Never enable the profiler in production environments as it will lead to major security vulnerabilities in your project.
In applications using Symfony Flex, run this command to install the profiler before using it:
$ composer require --dev symfony/profiler-pack