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:

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        $ php bin/symfony_requirements
    

Below is the list of required and optional requirements.

Required

PHP needs to be a minimum version of PHP 5.5.9
JSON needs to be enabled
ctype needs to be enabled
Your php.ini needs to have the date.timezone setting

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.

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.