Symfony YAML is a PHP library that parses YAML strings and converts them to PHP arrays. It can also converts PHP arrays to YAML strings. Its official website is at http://components.symfony-project.org/yaml/.
The documentation is to be found in the doc/ directory.
Symfony YAML is licensed under the MIT license (see LICENSE file).
The Symfony YAML library is developed and maintained by the symfony project team. It has been extracted from symfony to be used as a standalone library. Symfony YAML is part of the symfony components project.