Product Decisions This Supports

Legacy maintenance only: Suitable exclusively for existing Zend Framework 2.x applications where migration is not feasible, but never for new development.
Avoid new implementations: High risk due to lack of maintenance, security patches, and modern feature support (e.g., environment variables, YAML enhancements).
Build vs buy: Strongly recommend building custom solutions or adopting actively maintained alternatives (e.g., Symfony Config, Laminas Config) over this package.

When to Consider This Package

Only in legacy Zend Framework 2.x environments where the package is already deeply integrated and migration is prohibitively costly.
Avoid if: Starting new projects, requiring security updates, targeting modern PHP versions (>7.4), or needing features like environment variable handling, nested config merging, or JSON/YAML validation beyond basic support.
Look elsewhere for all new work; prioritize Laminas Config (the official successor) or ecosystem-standard tools like Symfony Config.

Executives: This package is archived, unsupported, and poses critical security risks. Using it introduces technical debt and compliance vulnerabilities. We must avoid it entirely in new projects and allocate resources to migrate existing systems to modern alternatives like Laminas Config to ensure long-term stability and reduce operational risk.
Engineering: Do not adopt this package for any new work. It has no security updates since 2019, lacks modern features, and is incompatible with current PHP ecosystems. Use Laminas Config (for Zend legacy users) or Symfony Config for robust, actively maintained configuration management. Migrate legacy