This package is abandoned and no longer maintained.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 package is not auto-updated.

Last update: 2019-02-20 18:21:50 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.

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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)