Respect/Validation
Validation
Respect/Validation is a PHP validation library that operates on single input values through a fluent, chainable rule system. Each validator instance builds a linear constraint pipeline by appending rules to an internal stack, executing them sequentially and short-circuiting on the first failure. The library captures validation failures as structured exceptions, enabling callers to inspect detailed error metadata programmatically and respond with meaningful messages.
The library distinguishes itself through its exception-based error handling model, which provides programmatic access to validation failure details rather than simple boolean results. Its fluent rule chaining allows developers to compose complex validation logic concisely, while the static factory entry point enables inline validation without object instantiation boilerplate. The rule-stack execution model optimizes performance by stopping at the first violation, and PHP-native type guarding enforces constraints using built-in functions without external dependencies.
The validation capabilities cover numeric value checking, including positivity and range constraints, alongside general data validation through composable rule chains. The library provides structured exception handling to catch and inspect validation failures, returning detailed error information to users.
Features
- PHP Validation Libraries - Provides data validation with chainable rules and detailed error messages for PHP applications.
- Validation Exception Handlers - Catches and inspects validation failure exceptions to produce meaningful error messages.
- Exception-Based Error Handling - Captures validation failures as structured exceptions for programmatic inspection.
- Single Value Validators - Operates on one input value at a time, composing rules into a linear constraint pipeline.
- Fluent Validation Rules - Builds validation logic by chaining method calls on a validator object.
- Validation Exception Inspectors - Catches and inspects validation failures to return meaningful error responses.
- Validation Failure Inspectors - Catches and inspects validation failure exceptions to produce meaningful error messages.
- Numeric Range Validators - Checks that inputs are numeric, positive, and within specified ranges using chainable rules.
- Validator Factory Methods - Provides a static factory method for creating validator instances inline.
- Short-Circuiting Stacks - Executes validation rules sequentially from a stack, short-circuiting on first failure.
- Built-in Function Guards - Leverages PHP built-in functions for runtime type and value constraints.
- Validation and Sanitization - Simple and expressive data validation library.
- Testing and Quality Assurance - Comprehensive data validation engine for PHP.
