UPGRADE FROM 2.2 to 2.3

When upgrading Symfony from 2.2 to 2.3, you need to do the following changes to the code that came from the Standard Edition:

• The debugging tools are not enabled by default anymore and should be added to the <code>web/app_dev.php</code> front controller manually, just after including the bootstrap cache:

  use Symfony\Component\Debug\Debug;
  
  Debug::enable();
  

You also need to enable debugging in the <code>app/console</code> script, after the $debug variable is defined:

    use Symfony\Component\Debug\Debug;

    if ($debug) {
        Debug::enable();
    }

• The parameters.yml file can now be managed by the incenteev/composer-parameter-handler bundle that comes with the 2.3 Standard Edition:

  • add "incenteev/composer-parameter-handler": "~2.0" to your composer.json file;
  • add /app/config/parameters.yml to your .gitignore file;
  • create a <code>app/config/parameters.yml.dist</code> file with sensible values for all your parameters.

• It is highly recommended that you switch the minimum stability to stable in your composer.json file.

• If you are using Apache, have a look at the new <code>.htaccess</code> configuration and change yours accordingly.

• In the <code>app/autoload.php</code> file, the section about intl should be removed as it is not needed anymore.

You can also have a look at the diff between the 2.2 version of the Standard Edition and the 2.3 version.