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requirements.rst

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.. index::
   single: Requirements

Requirements for Running Symfony

To run Symfony, your system needs to adhere to a list of requirements. You can easily see if your system passes all requirements by running the web/config.php in your Symfony distribution. Since the CLI often uses a different php.ini configuration file, it's also a good idea to check your requirements from the command line via:

$ php app/check.php

Below is the list of required and optional requirements.

Required

  • PHP needs to be a minimum version of PHP 5.3.9
  • JSON needs to be enabled
  • ctype needs to be enabled
  • Your php.ini needs to have the date.timezone setting

Caution!

Be aware that Symfony has some known limitations when using PHP 5.3.16. For more information see the Requirements section of the README.

Optional

  • You need to have the PHP-XML module installed
  • You need to have at least version 2.6.21 of libxml
  • PHP tokenizer needs to be enabled
  • mbstring functions need to be enabled
  • iconv needs to be enabled
  • POSIX needs to be enabled (only on *nix)
  • Intl needs to be installed with ICU 4+
  • APC 3.0.17+ (or another opcode cache needs to be installed)
  • php.ini recommended settings
    • short_open_tag = Off
    • magic_quotes_gpc = Off
    • register_globals = Off
    • session.auto_start = Off

Doctrine

If you want to use Doctrine, you will need to have PDO installed. Additionally, you need to have the PDO driver installed for the database server you want to use.