RulerZ

Provides a simple, SQL-like DSL that allows writing business rules once and applying them consistently across arrays, objects, and databases, as shown in the quick usage examples.

Supports diverse data sources like Doctrine, Elasticsearch, and Laravel Eloquent via additional libraries, enabling seamless rule application without code duplication.

Converts rules directly into database queries for backends like Doctrine, avoiding pre-fetching data and improving performance, highlighted as a 'killer feature' in the README.

Encapsulates rules in reusable, testable specification classes, promoting better code organization and maintainability, as emphasized in the philosophy section.