This package is abandoned and no longer maintained. The author suggests using the symfony/dependency-injection package instead.

Runtime retrieval of parameters from environment variables for Symfony

dev-master / 1.0.x-dev 2017-04-30 11:04 UTC


This bundle provides a way to read parameters from environment variables at runtime. The value defined in the container parameter is used as fallback when the environment variable is not available.

Build Status Scrutinizer Code Quality Code Coverage SensioLabsInsight Latest Stable Version Latest Unstable Version License


Installation is a quick (I promise!) 2 step process:

  1. Download IncenteevDynamicParametersBundle
  2. Enable the bundle

Step 1: Install IncenteevDynamicParametersBundle with composer

Run the following composer require command:

$ composer require incenteev/dynamic-parameters-bundle

Step 2: Enable the bundle

Finally, enable the bundle in the kernel:

// app/AppKernel.php

public function registerBundles()
    $bundles = array(
        // ...
        new Incenteev\DynamicParametersBundle\IncenteevDynamicParametersBundle(),


Define the map of parameter names with the environment variable used to configure them.

# app/config/config.yml
        database_host: DATABASE_HOST
        "": DATABASE_NAME

Environment variables are always strings. To be able to set parameters of other types, the bundle supports parsing the environment variable as inline Yaml:

# app/config/config.yml
            variable: HAS_SSL
            yaml: true

ParameterHandler integration

If you are using the env-map feature of the Incenteev ParameterHandler, you can import the whole env-map very easily:

# app/config/config.yml
    import_parameter_handler_map: true
        something_else: NOT_IN_THE_COMPOSER_JSON

The ParameterHandler parses the environment variables as inline Yaml, so the Yaml parsing is automatically enabled for these variables when importing the map.

Note: Any parameter defined explicitly will win over the imported map.

By default, the bundle will look for the composer.json file in %kernel.root_dir%/../composer.json. If you use a non-standard location for your kernel, you can change the path to your composer.json file to read the env-map:

# app/config/config.yml
    import_parameter_handler_map: true
    composer_file: path/to/composer.json

Retrieving parameters at runtime

The bundle takes care of service arguments, but changing the behavior of $container->getParameter() is not possible. However, it exposes a service to get parameters taking the environment variables into account.



  • Getting a parameter from the container directly at runtime will not use the environment variable
  • Parameters or arguments built by concatenating other parameters together will not rely on the environment variables (yet)