New in Symfony 4.1: Misc. improvements (part 1)

Made csrf_token() usable without forms

Contributed by Christian Flothmann in #25197

The csrf_token() Twig function is currently only registered when the Form component is installed. However, this function is also useful, for example, when protecting against CSRF in login forms for which you do not need the full Form component.

In Symfony 4.1, you can use the csrf_token() function even when the Form component is not installed.

CSV processor for env vars

Contributed by Kévin Dunglas in #25627

Although it's not as popular as other formats like JSON and YAML, some apps store their environment variables using the CSV format. In Symfony 4.1 you can use a new csv processor to decode those contents into a PHP array (it uses the str_getcsv() PHP function to do the conversion):

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parameters:
    env(some_parameter): 'foo,bar,baz'
    some_option: %env(csv:some_parameter)%
    # 'some_option' is array('foo', 'bar', 'baz') in the PHP app

Combine this new csv processor with the existing file: processor to parse the CSV encoded env vars stored in some file.

Made ProgressBar::setMaxSteps public

Contributed by Gabriel Ostrolucký in #26449

In Symfony 4.1 this method is public so you can change the progress bar size dynamically while the app is executing. It's useful for edge cases like showing the upload progress of a big file which hasn't been fully downloaded yet:

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use Symfony\Component\Console\Helper\ProgressBar;

$bar = new ProgressBar($output);
$bar->start();
$bar->setProgress(2);

$bar->setMaxSteps(10);
$bar->setProgress(5);

$bar->setMaxSteps(100);
$bar->setProgress(10);
$bar->finish();

This example will display the following progress bars in the terminal:

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0 [----------------------------]
      2 [==|-------------------------]
   5/10 [==============|-------------]  50%
 10/100 [==|-------------------------]  10%
100/100 [============================] 100%

Display DotEnv vars in the profiler

Contributed by Roland Franssen in #25166

In Symfony 4.1, the environment variables created by the DotEnv component are now displayed in the profiler separately from the other env vars. That makes it easier to check if your .env config file is working as expected: