Contributed by
Roland Franssen
in #19278.

In Symfony 3.3, the FrameworkBundle will provide a new console command called about. This command provides information about your Symfony application and your PHP environment. Its output can be useful to debug issues, so you should consider asking for it when a developer reports issues using your software.

As an example, this is the output displayed when executing about in the Symfony Demo application:

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$ ./bin/console about

 -------------------- -------------------------------------------
  Symfony
 -------------------- -------------------------------------------
  Version              3.2.5
  End of maintenance   07/2017
  End of life          01/2018
 -------------------- -------------------------------------------
  Kernel
 -------------------- -------------------------------------------
  Type                 AppKernel
  Name                 app
  Environment          dev
  Debug                true
  Charset              UTF-8
  Root directory       ./app
  Cache directory      ./var/cache/dev (587 KiB)
  Log directory        ./var/logs (1.5 MiB)
 -------------------- -------------------------------------------
  PHP
 -------------------- -------------------------------------------
  Version              7.1.3
  Architecture         64 bits
  Intl locale          en_US_POSIX
  Timezone             America/New_York (2017-03-31T16:55:46-05:00)
  OPcache              true
  APCu                 true
  Xdebug               false
 -------------------- -------------------------------------------