Paving the way for Symfony 3 with the "Deprecation Detector" tool
Symfony 3 will be released at the end of November 2015. Learning from our own history, the transition from Symfony 2 to 3 will be much more pleasant than the transition from symfony 1 to 2 that happened in July 2011.
Technically speaking, Symfony 3 includes no new features comparing it with Symfony 2.8, which will be released at the same time. The main change introduced by Symfony 3 is that any feature, option or behavior marked as deprecated in 2.8 version will be removed.
This means that your Symfony applications won't work on Symfony 3 unless you remove all their deprecations. In order to simplify the task of finding which deprecations affect your applications, a new tool called Deprecation Detector has just been released.
This command console application runs a static code analysis against your
project's source code to find usages of deprecated methods, classes, interfaces
and services. Specifically, it identifies the use of deprecated code thanks to
Although this tool is still in a very early stage of development, you can already test it in your own applications:
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$ git clone firstname.lastname@example.org:sensiolabs-de/deprecation-detector.git $ cd deprecation-detector $ composer install $ ./bin/deprecation-detector check /path/to/your-project/src /path/to/your-project/vendor
Since you are probably going to use this tool very frequently, it's better to build a PHAR file and install it globally, as explained in its documentation.
Deprecation Detector is a project developed by the team at SensioLabs Deutschland, maintained by Marvin Klemp and published as Open Source. Your issues and pull requests are more than welcome to improve the project.
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