You are browsing the Symfony 4.3 documentation, which changes significantly from Symfony 3.x. If your app doesn't use Symfony 4.3 yet, browse the Symfony 3.4 documentation.

Symfony Reference

Learn about every configuration option available in Symfony applications and discover the power of customizing the framework the way you want.

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Reference Documents¶

Configuration Options

Ever wondered what configuration options you have available to you in config/packages/*.yaml files? In this section, all the available configuration is broken down by the key (e.g. framework) that defines each possible section of your Symfony configuration.
Configuring the Kernel
Forms and Validation
Twig Extensions (forms, filters, tags, etc) Reference
Other Areas
- Built-in Symfony Service Tags
- Built-in Symfony Events

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